Election Data Poll!

This will be a short diary, because there’s not much to say. As some of you already know, I’ve been compiling 2008 Obama/McCain precinct-level data for Illinois and translating it into the format on Dave’s App. The Illinois Project is essentially done and the data will hopefully be available on Dave’s App soon.

So, my question then is: Which state should I do next? I was planning on California, but I’m not set on that. My preliminary survey tells me that the six big states below are viable candidates (though I’m not entirely certain on Florida). Since this can be very time-consuming (though I doubt any of the states below will be as challenging as Illinois), I figured I’d run this poll to decide which state I should work on next. Happy voting!

PS. If anyone knows where I can get precinct-level results for New York then please let me know! (besides contacting county clerks, of course)

By what margin will Bob Shamansky win?

View Results

Loading ... Loading ...

Illinois Downstate

So, I’ve decided to post the following partial map of Illinois just to get some opinions on how viable this seems.

My primary goal so far has been to create three Democratic districts in downstate Illinois. By my calculation, the IL-12, IL-15, and IL-17 districts on this map are each 53% Kerry districts. That means that the Democratic performance of IL-12 and IL-17 has been nudged up (they were 52% and 51% Kerry respectively) and a new, equally Democratic mid-cities district has been created (the orange IL-15 district).

Drawing three Democratic districts outside Chicagoland is obviously one lynchpin to a 14-4 Illinois map.

Meanwhile, I’m unsure when I’ll get the chance to work on Chicago & the collar counties some more (I’ve actually drawn them out in part, but I removed it from this map). My main priority has been collecting the Obama/McCain data for the entire state so that it can be uploaded to Dave’s App. I expect to have that done by the end of the upcoming week.

Note that the green districts on this map (IL-11 & IL-16) are just partially drawn. They are meant to ultimately be two of four GOP votesinks, the others being the yellow & tan districts on this map.

So, please give me feedback! Maybe it’ll inspire me to finish my map. 🙂

California with 37 VRA seats

Here we go again! Another California map…

I dunno how much demand is actually left for California redistricting maps, but here’s my latest version anyhow. Since this’ll be the last map I post (of California or any other state) until actual Census data is available, I’ve decided to go all out.

When I posted my original California map that basically disregarded the VRA, and again when I posted my VRA maps of Southern states, I was strongly encouraged to create a new California map that takes the VRA as its starting point. While initially somewhat resistant, I was persuaded that I should do exactly that mainly when I looked over the new California redistricting guidelines and saw that they prioritize the VRA above all other criteria.

Moreover, whereas my initial map used the 2008 population estimates, I wanted to make a map using the more accurate American Community Survey projections. So, I’ve created the following maps and analysis by this methodology:

1) I first addressed Section 5 preclearance concerns to ensure that none of the four covered counties (Kings, Merced, Monterrey, Yuba) would be subject to a “retrogression” challenge.

2) I then addressed Section 2 requirements that majority-minority districts be drawn wherever compact minority communities permit the drawing of such districts without substantially ignoring traditional redistricting criteria.

3) I then filled in the rest of the map based on the non-partisan criteria specified by the California guidelines (contiguity, geographic integrity, communities of interest, compactness). As such, I altogether disregarded partisan data and incumbent residency as required by law (especially easy to do on the ACS version at Dave’s app which doesn’t feature partisan data).

4) However, I wanted to know what the partisan effects would be, so I then had to translate my ACS-VRA map into partisan figures – which was easily the most time-consuming part of this exercise.

5) Finally, I was curious to see how the maps I drew would match up with the current incumbents, so I pinpointed where each one lives and identified in which district on my map they would end up.

The resulting maps below feature 37 majority-minority seats of which 15 are majority-Latino and 1 is majority-Asian.

So, I’m finally ready to present all that after the jump. Needless to mention, analyzing California is a daunting task, so I’ve decided to organize my presentation as follows:

For the purposes of my discussion, I’ve divided the state into the following regions: (1) Northern California (including Sacramento); (2) the Bay Area; (3) the Central Valley & Central Coast; (4) Los Angeles; (5) Orange County & the Inland Empire; (6) the San Diego Area.

For each region, I’ve posted some general comments, then listed the 2008 Obama/McCain figures for each district including the incumbent of that currently numbered district, and then posted the relevant maps. I then have three sections of commentary: VRA Implications, Partisan Impact, and Incumbents.

A quick note on the latter: It goes without saying that where the incumbents end up in the new maps is highly speculative. The reason why I decided to look at this anyhow is twofold: (1) at the very least, it gives some sense of how the new maps are likely to scramble the incumbents, even if the actual final arrangement is very different; (2) the places where incumbents are likely to end up together in the same district or where districts are likely to initially end up without a resident incumbent obviously correlate with the most highly gerrymandered parts of the state, and so therefore it’s safe to say that the incumbents that are most affected on my map will be the ones at highest risk under the actual maps. Of course, residency within a district is not a requirement to run for Congress, but Congress critters do generally prefer to run where they live – or to move if they have to.

One last note before I get underway: I’ve played with the California maps enough at this point that I have a rather good sense of what decisions are likely to help Democrats or Republicans. All else being equal, I have generally made those decisions which are most helpful to the GOP. On one hand, I’ve done this to minimize unfounded accusations of partisan mapping bias on my part. On the other hand, I’ve done this because I think similar decisions will maximize the likelihood of a map being approved by the Redistricting Commission which requires three GOP votes to pass the maps. On the third hand (?!), I’ve done this because I would rather see a ‘worst-case scenario’ for Democrats, with the awareness that the actual maps are likely to be somewhat more favorable, than to promote a rose-colored glasses view inconsistent with the probable outcome. In short, if you are a Republican and you don’t like my maps, you probably need to reflect on how consistent your perception of California is with reality.

So, without further ado, here goes!

Northern California & Sacramento

Below I’ve started with two maps. The first is a broader view of NorCal while the second is a closer view of Sacramento so that it’s clear where I’ve drawn the lines and how the Sacramento districts intersect with the surrounding districts.

In my view, the NorCal mapping scheme is very likely to resemble this arrangement. (I guess that’s stating the obvious..) On one hand, there’s a certain symmetry: two districts anchored by Sacramento, two compact districts extending toward the northwest and the northeast respectively, and one district covering the sparsely populated northern end of the state.

I’ve seen several maps that further subdivide Sacramento County or that create more elongated districts stretching as far as the Oregon border. I personally don’t think the such maps are consistent with the current rules that call for minimizing county/city subdivisions and that generally prohibit bypassing centers of population to reach more distant populations.

In any case, here are the partisan figures for these five districts. I’ll post further comments after the maps.

CA-01 (D-Thompson): 61% Obama – 37% McCain

CA-02 (R-Herger): 47% Obama – 51% McCain

CA-03 (R-Lungren): 50% Obama – 48% McCain

CA-04 (R-McClintock): 44% Obama – 54% McCain

CA-05 (D-Matsui): 68% Obama – 30% McCain (61% Minority – 18% Asian; 25% Latino)



VRA Implications: There’s not much in the way of VRA implications with concern to mapping Northern California. Yuba County is a Section 5 preclearance county but it’s currently in a 76% white district. On my map, it goes from its present location in CA-02 represented by Herger to the CA-04 district represented by McClintock. The new CA-04 district has virtually identical racial/partisan stats as the current CA-02, so there’s no “retrogression” concern. The only other district of VRA interest is CA-05 and my map takes it from 56% minority to 61% minority. There’s no prospect of creating any other majority-minority districts, nor is there a prospect of creating a district with a majority from a single minority group.

Partisan Impact: Herger’s CA-02 district goes from 55% McCain to 51% McCain and Lungren’s CA-03 goes from an even 49%-49% split to 50% Obama/48% McCain. In the case of CA-02, the district should be safe enough for Herger, but he’d probably have to actually put a bit of effort into his reelection campaigns and there might be an opening for the right Democrat in a good year for Dems, particularly if the seat comes open.

Lungren’s CA-03 might be far more problematic from his standpoint. On paper, it’s a ‘tossup’ at worse, but Lungren’s been facing stiff challenges in recent elections, and he doesn’t strike me as a particularly good fit for this district that’s now fully contained in Sacramento County. While the district should be quite suitable for a Sacramento Republican, I’m not too sure that Lungren is that Republican, and the area is gradually trending leftward (which will be a problem for the GOP no matter how the ‘second’ Sacramento district gets drawn).

The other three districts are not meaningfully affected, though Thompson’s CA-01 does drop from 66% Obama to 61% Obama.

Incumbents: My map doesn’t displace any of the current incumbents in these five districts and it’s unlikely that any mapping scheme would. That includes Tom McClintock: A lot of sources still list his residence as Elk Grove in Sacramento County, but he’s officially moved to Roseville in Placer County.

The Bay Area

My latest map of the Bay Area is below.

The most consequential effect of using the ACS figures has been that CA-11 is clearly pushed out of the Bay Area and into the Central Valley (which is where I’ll deal with it below). Otherwise, my main concerns here were maximizing the number of majority-minority seats and carving out a majority-Asian seat in particular.

In my experimentation with mapping the Bay Area, it seems fairly clear to me that there are only two districts with significant ambiguity as to how the lines will end up: On my map below, they’re CA-10 and CA-16. What does seem clear enough, however, is that most of the districts will be arranged along the Bay coast, with a ‘hinterland’ district centered in Contra Costa/Alameda, and then leaving what I think of as a ‘mop-up’ district piecing together the ‘leftovers’ from the districts with more obvious placement (e.g., CA-10 on this map).

It’s also worth noting that the contours of this mapping scheme were partially determined by what has to happen in the Central Valley to maintain a VRA-compliant CA-18 district. To do that, you have to split off the heavily Latino parts of Stanislaus and San Joaquin counties, which means you have to situate a district on the remainder which still leaves a part left over on one end or the other. The most coherent mapping scheme I could identify involved attaching that leftover part to CA-10 rather than, say, CA-19. Either way, it doesn’t make much difference: CA-10 will still be heavily Dem and CA-19 will still be heavily GOP.

CA-06 (D-Woolsey): 76% Obama – 22% McCain

CA-07 (D-Miller): 73% Obama – 25% McCain (52% Minority – 15% Asian; 24% Latino)

CA-08 (D-Pelosi): 85% Obama – 13% McCain (52% Minority – 29% Asian)

CA-09 (D-Lee): 88% Obama – 10% McCain (64% Minority – 20% AA; 20% Asian; 21% Latino)

CA-10 (D-Garamendi): 61% Obama – 38% McCain (55% Minority – 24% Latino)

CA-12 (D-Speier): 74% Obama – 25% McCain(57% Minority – 32% Asian; 19% Latino)

CA-13 (D-Stark): 70% Obama – 28% McCain (74% Minority – 51% Asian)

CA-14 (D-Eshoo): 71% Obama – 27% McCain

CA-15 (D-Honda): 71% Obama – 27% McCain (71% Minority – 26% Asian; 39% Latino)

CA-16 (D-Lofgren): 65% Obama – 34% McCain (52% Minority – 17% Asian; 25% Latino)

VRA Implications: My map takes the Bay Area from seven majority-minority districts out of 11 to eight majority-minority districts out of 10. The CA-13 district is also majority-Asian. In some cases, I’ve swapped proportions (i.e., CA-08 goes from 58% to 52% minority while CA-12 goes from 52% to 57% minority; CA-16 goes from 69% to 52% minority while CA-15 goes from 53% to 71% minority). This is augmented by the fact that CA-11 goes from the current 63% white district to a 52% minority district in the Central Valley and CA-17 on the Central Coast becomes a majority-minority district.

For the record, you evidently cannot create a majority-Latino district in San Jose even if you ‘give up’ the majority-Asian district. The Latino population is too intermixed with the Asian population in much of the area.

Partisan Impact: The Bay Area seats will all be heavily Democratic seats no matter how they’re mapped out.

It’s been suggested elsewhere that ‘a foothills seat in Contra Costa / Alameda’ could be a tossup seat. This is obviously not true – mainly because you don’t have anywhere near enough people there as should be self-evident in these maps. The most Republican seat that I was able to create following that guideline was a 59% Obama seat. Once you take in all the most Republican areas in the eastern part of the Bay counties, you must necessarily go into heavily Democratic areas in order to fill out the necessary population.

There’s also been a suggestion that: “The outer areas of current CD14-CD15-CD16 could end up being a tossup seat.” That makes no sense whatsoever. The “outer areas” of those districts are basically Santa Cruz County, which was a 77% Obama county. To make the long story short, anyone who sees a “tossup” district in the Bay Area (much less a Republican district) is hallucinating.

Incumbents: My mapping scheme would inconvenience several Bay Area incumbents, with at least one of them being out of a job (unless he or she moves to the Central Valley). McNerney lives in Pleasanton (central Alameda County) which ends up in CA-16 on this map. Since this district is most similar to his current district, I think he’d be very likely to run there. Mike Honda lives in the Campbell area of San Jose, which ends up in CA-14 on this map. This is essentially Anna Eshoo’s district who lives in Atherton which is still in CA-14. Meanwhile, Zoe Lofgren lives in San Jose and would end up in CA-15.

As I see it, the most obvious place for Mike Honda to run would actually be CA-13 since it becomes majority-Asian and takes in substantial parts of his current district, but if Pete Stark doesn’t retire that’d mean a primary battle – aside from the residency issue. Ultimately, I don’t know how this would be sorted out. Perhaps some Californians could comment on it.

Whatever the case, tidying up the lines in the San Jose area makes it highly probable that at least two Democrats will end up in the same district – even leaving aside the fact that the Bay Area will lose a seat.

It’s also worth noting that Garamendi lives in Walnut Grove (Sacramento County) which just barely ends up in this CA-10 district. That said, I think Garamendi will end up running in whatever district most resembles his current district regardless, whether or not he has to move.

Central Coast & Central Valley

The Central Coast and the Central Valley are really two separate regions, but I’ve decided to cover them together for the sake of expedience. By and large, the mapping scheme that I settled on was dictated by Section 5 preclearance concerns, since three of these counties are covered: Kings, Merced, and Monterey. In short, I mapped the relevant districts first (CA-20, CA-18, and CA-17) to satisfy ‘retrogression’ concerns, and then mapped the rest accordingly.

A couple of general points are worth noting. San Benito County only has about 55,000 people and doesn’t really make a significant difference regardless how it’s mapped. I basically chose to add just enough of it to CA-17 so that the boundaries with CA-12 to the north and CA-23 to the south could be the coastal county lines. The remainder then obviously belonged with CA-20 (but again, it makes no meaningful difference to either the partisan or ethnic breakdown).

As for the Great Basin, it’s even more sparsely populated and even less consequential than San Benito. I’m sure there’s some Republican out there who imagines that if the Great Basin were instead divided and appended to the more central districts it’d somehow benefit the GOP. Any such Republicans are misguided. About 30,000 people live in the Great Basin and chopping it up does little besides create a less coherent map. But, hey, if it makes the Commission feel better for some reason, I say go for it.

Besides reiterating that CA-11 isn’t really ‘McNerney’s district’ on this map – having been displaced from the Bay Area to the Central Valley due to population shifts – I’ll save the rest of my commentary for below.

Here’s the Obama/McCain breakdown for these districts:

Central Coast

CA-17 (D-Farr): 73% Obama – 25% McCain (54% Minority – 44% Latino)

CA-23 (D-Capps): 57% Obama – 41% McCain

CA-24 (R-Gallegly): 56% Obama – 43% McCain (52% Minority – 41% Latino)

Central Valley

CA-11 (D-McNerney): 51% Obama – 47% McCain (52% Minority – 33% Latino)

CA-18 (D-Cardoza): 57% Obama – 41% McCain (69% Minority – 54% Latino)

CA-19 (R-Denham): 41% Obama – 56% McCain

CA-20 (D-Costa): 50% Obama – 48% McCain (75% Minority – 66% Latino)

CA-21 (R-Nunes): 51% Obama – 47% McCain (62% Minority – 42% Latino)

CA-22 (R-McCarthy): 39% Obama – 59% McCain (54% Minority – 42% Latino)



VRA Implications: The VRA implications are quite significant in that three of the four California counties that require Section 5 preclearance are in this central region. Here’s how I’ve handled each in turn:

Merced County goes from a 42% Latino plurality in the current CA-18 district to a 54% Latino majority on my map. Clearly this more than satisfies Section 5 requirements.

Monterey County goes from the current 50% white/39% Latino CA-17 district to a 46% white/44% Latino district on my map. This is about as Latino as this district will get absent extreme gerrymandering, and it certainly cannot be challenged on ‘retrogression’ grounds.

I’m far more ambivalent about the CA-20 district that I’ve drawn which includes Kings County. On the one hand, it goes from 63% Latino to 66% Latino according to the ACS figures. On the other hand, it drops from a 60% Obama district to a 50% Obama district. This is mainly because it trades heavily Democratic parts of Fresno and Bakersfield with settled Latino communities for rural areas where the Latino population is more comprised of often-transient agricultural workers. In short, the CA-20 district that I’ve drawn may not be deemed as providing Latinos with a true opportunity to elect a “candidate of choice” despite the high Latino percentage. Even more importantly, it may be the case that Latino registration figures are so out of sync with the Census count that this district would still be considered ‘retrogressive’ under Section 5.

To make the long story short, if this district fails to satisfy Section 5 requirements, then obviously the solution is to restore the current dip down to Bakersfield, and the district will obviously become much more Democratic. On the flip-side, I decided to roll with the district I mapped out because that may well be the kind of district that will satisfy the GOP enough to garner three Republican votes for passage by the Commission.

Aside from these Section 5 issues, my map features seven majority-minority districts where there are currently four, and two of these are majority-Latino versus just one on the current map.

Partisan Impact: For the Central Coast the partisan impact is virtually assured: CA-17 remains heavily Democratic, CA-23 becomes somewhat more competitve but still likely Democratic, and CA-24 gets a clear Democratic lean. I’ve seen it mentioned elsewhere that – in maps similar to mine – CA-30 somehow crosses over to take in the more Republican parts of Ventura County as a “political” move to favor Democrats, but this is total nonsense. The parts of Ventura County closer to the LA County border are more Democratic, not less Democratic, and if you instead map CA-24 starting at the LA County line northward you end up with a CA-24 district that’s between 58% to 60% Obama.

For the Central Valley, the partisan effect is even more consequential. My map creates a ‘toss-up’ CA-11 district in San Joaquin & Stanislaus, with perhaps a slight GOP lean, in place of a strongly Democratic seat in the Bay Area. Otherwise, CA-20 and CA-21 also become ‘toss-ups’ with a slight GOP lean. The consequences for 2012 are probably more contingent on where the incumbents decide to run, so I’ll comment further below.

Incumbents: None of the Central Coast incumbents are displaced, though Gallegly might as well be.

As for the Central Valley, we can safely say that McCarthy will end up in whatever district covers the bulk of Kern County. Since it strikes me as implausible that one of the Bay Area Democrats or one of the dispossesed SoCal Republicans would move to the Central Valley, that leaves four incumbents for five districts. The question then is where will they run.

In my mapping scheme above, Cardoza would obviously run in CA-18. Denham would also be in CA-18 (both Cardoza and Denham live in Atwater in Merced County), but that’s the case already and it obviously didn’t stop him from running in the current CA-19 district. That said, on my map Nunes (Visalia) is actually in CA-19 and he would represent more of the new district’s population than would Denham. So, I imagine Nunes would likely end up running there. As for Costa, he lives in Fresno and I think he’d almost surely run in CA-21 unless the new CA-20 district ends up being more like the current CA-20 district.

So, that leaves Denham to run in one of the slight-GOP ‘toss-ups’ (CA-11 or CA-20) leaving the other one vacant.

Los Angeles

My latest map of Los Angeles is below. There isn’t really that much to say about Los Angeles in general, other than to note that Dreier’s CA-26 district is effectively gone to the Inland Empire (and I’ll discuss it there). Besides that, my goal was, yet again, to create as many majority-minority seats as possible, and to make as many of them as reasonable majority-Latino.

It’s also worth explaining why I chose to have three districts cross over from neighboring counties.

Bringing the CA-42 district across from San Bernardino is the best way to maximize the Latino population of that district while also maintaining the Latino proportion of CA-43. If the goal is to maximize majority-Latino districts, then this is obviously the way to go.

As for CA-40 and CA-46, bringing them into LA County to take in the more white parts of Long Beach (CA-46) and the Whittier/Diamond Bar area (CA-40) is the most effective way to maximize the minority percentage of the neighboring LA County seats, while also maximizing the minority percentages of CA-47 and CA-48 in Orange County. So, from a VRA standpoint, this is again the obvious way to go. From a partisan standpoint it makes no difference of consequence.

Anyhow, here are the districts:

CA-25 (R-McKeon): 50% Obama – 48% McCain (53% Minority – 34% Latino)

CA-27 (D-Sherman): 69% Obama – 29% McCain (76% Minority – 60% Latino)

CA-28 (D-Berman): 71% Obama – 27% McCain (53% Minority – 38% Latino)

CA-29 (D-Schiff): 68% Obama – 30% McCain (69% Minority – 22% Asian; 39% Latino)

CA-30 (D-Waxman): 67% Obama – 32% McCain

CA-31 (D-Becerra): 81% Obama – 17% McCain (82% Minority – 62% Latino)

CA-32 (D-Chu): 63% Obama – 35% McCain (82% Minority – 28% Asian; 52% Latino)

CA-33 (D-Bass): 84% Obama – 14% McCain (79% Minority – 54% Latino)

CA-34 (D-Roybal-Allard): 70% Obama – 28% McCain (82% Minority – 67% Latino)

CA-35 (D-Waters): 88% Obama – 10% McCain (92% Minority – 40% AA; 45% Latino)

CA-36 (D-Harman): 63% Obama – 35% McCain

CA-37 (D-Richardson): 80% Obama – 19% McCain (89% Minority – 56% Latino)

CA-38 (D-Napolitano): 64% Obama – 34% McCain (71% Minority – 60% Latino)

CA-39 (D-Sanchez): 64% Obama – 34% McCain (84% Minority – 67% Latino)

VRA Implications: My map features 12 majority-minority seats in LA County which is the same as the current map. However, the Dreier seat which is currently majority-white has been pushed entirely out of LA County to become a majority-Latino Inland Empire seat. On the flip-side, CA-36 (Harmon) has dropped from 54% minority to 43% minority – which is an unavoidable consequence of eliminating the CA-46 coastal strip to take in Palos Verdes. Meanwhile, McKeon’s CA-25 seat has gone from 43% minority to 53% majority-minority. So, to make the long story short, this represents a net gain of one majority-minority seat.

The other significant VRA development is that my map features 8 majority-Latino seats versus 6 in the current map. The current majority-Latino seats have these Latino percentages: 77%, 70%, 69%, 62%, 61%, 55%. My Latino-majority seats have these percentages: 67%, 67%, 62%, 60%, 60%, 56%, 54%, 52%. In short, I’ve chosen the best balance I could come up with between maintaining the population of the current majority-Latino seats versus creating new ones. If the Commission would prefer one or two more seats above 65% then they’ll just create choppier lines. If so, more power to them; I don’t see the need to do so.

Partisan Impact: There’s really not much to say here. LA County will feature 13 heavily Dem seats and one McKeon seat. The Dreier seat, of which a majority lives outside LA County anyhow, will surely be displaced. The CA-25 McKeon seat that I’ve drawn here is basically the most Republican leaning seat that can be drawn in the less-populated northern half of LA County. If it dips south anywhere besides the places where I’ve chosen then the Obama percentage will rise.

Beyond that, there is of course no possibility of a second GOP seat in LA County. However, I do want to comment on what seems to be a widespread misconception that a more GOP leaning CA-36 might be drawn if it were oriented eastward (from Palos Verdes to Long Beach) rather than northward (from Palos Verdes to Santa Monica). In reality, this is simply not true and the only reason why I can figure this mistaken belief has seemingly become common on SSP is because it keeps getting repeated in every California thread despite having no support whatsoever. In actuality, the CA-36 district that I’ve drawn here is the most Republican seat that can viably be drawn in southwest LA, and everything around it is heavily Democratic. The more you shift it toward Long Beach, the more Democratic it becomes.

Incumbents: Perhaps the most interesting part of my LA map is in how it scrambles the incumbents, which I imagine is very likely to be the case with any LA mapping scheme that is less gerrymandered than the current one. Needless to mention, this is only representative of what might happen, but here’s the list of LA districts with who currently represents the district of that number and with where the incumbents end up on my map:

CA-25 (R-McKeon): McKeon (Santa Clarita)

CA-27 (D-Sherman): Vacant

CA-28 (D-Berman): Sherman (Sherman Oaks); Berman (Valley Village); Schiff (Burbank)

CA-29 (D-Schiff): Becerra (Eagle Rock)

CA-30 (D-Waxman): Waxman (Beverly Hills)

CA-31 (D-Becerra): Roybal-Allard (Boyle Heights)

CA-32 (D-Chu): Chu (Monterey Park)

CA-33 (D-Bass): Bass (Culver City); Waters (Hancock Park)

CA-34 (D-Roybal-Allard): Linda Sanchez (Lakewood)

CA-35 (D-Waters): Vacant

CA-36 (D-Harman): Harman (Venice)

CA-37 (D-Richardson): Richardson (Long Beach)

CA-38 (D-Napolitano): Dreier (San Dimas)

CA-39 (D-Sanchez): Napolitano (Norwalk)

How they’d sort it all out is obviously speculative at best, but I do want to make a few observations.

Waters does not live in the current CA-35 district anyhow, so I doubt this makes any difference in that regard. I don’t know if she maintains a property or whatever in Watts, but her current arrangement would obviously work just as well no matter how the new maps are drawn.

Berman and Sherman live very close together and it took some creative map-drawing to keep them in separate districts in 2001. The likelihood of them ending up in the same district is high, especially if the San Fernando Valley is consolidated into a 60%+ majority-Latino district, as seems quite likely.

It doesn’t really matter where Dreier ends up, since he won’t be able to win an LA County district regardless (unless he moves to CA-25), so I presume that if he does end up as the only resident incumbent of a district then one of the Democrats will move over to help sort things out.

Finally, Harman doesn’t actually matter anymore for these purposes. So, it’s worth noting that of the two contenders for the CA-36 seat, Debra Bowen lives in Marina del Rey and would still be in CA-36 on my map. Janice Hahn lives in San Pedro near the Port of Los Angeles which ends up in CA-37 on this map. Since the lower part of CA-36 will almost surely have to shift westward to take in Palos Verdes, it’ll be a very close call which side of the line San Pedro ends up on.

If you’re a Winograd supporter, get real. (She lives in Marina del Rey.)

Orange County & the Inland Empire

The next two maps cover Orange County and the Inland Empire. In my mapping scheme, this also includes CA-26, which is now a Riverside County seat. It’s worth noting that, although CA-26 is more commonly thought of as an LA County seat, a majority of the current CA-26 population actually lives outside LA County. Since the seat anchored by Riverside city is the least congruent with any of the current districts, it makes sense to label that CA-26 for comparative purposes.

My mapping scheme is very straightforward, so there’s not really much to add that I don’t cover below. Since the numbering ends up out of order, here’s how these seats break down by county:

San Bernardino

CA-41 (R-Lewis): 44% Obama – 54% McCain

CA-42 (R-Miller): 55% Obama – 43% McCain (71% Minority – 54% Latino)

CA-43 (D-Baca): 65% Obama – 33% McCain (79% Minority – 61% Latino)

Riverside

CA-26 (R-Dreier): 59% Obama – 39% McCain (70% Minority – 53% Latino)

CA-44 (R-Calvert): 41% Obama – 57% McCain

CA-45 (R-Bono Mack): 50% Obama – 48% McCain (52% Minority – 43% Latino)

Orange

CA-40 (R-Royce): 44% Obama – 54% McCain

CA-46 (R-Rohrabacher): 50% Obama – 48% McCain (52% Minority – 22% Asian; 25% Latino)

CA-47 (D-Sanchez): 56% Obama – 42% McCain (77% Minority – 61% Latino)

CA-48 (R-Campbell): 53% Obama – 45% McCain (59% Minority – 37% Latino)



VRA Implications: On the current map, these 10 seats include only 3 minority-majority seats (CA-40, CA-43, CA-47) two of which are also majority-Latino (CA-43 & CA-47). My map has 7 out of 10 seats as majority-minority and 4 of these are majority-Latino. It’s difficult to envision a more drastic improvement from a VRA standpoint.

Of the current majority-Latino seats, I’ve nudged Baca’s CA-43 up from 58% Latino to 61% Latino. Loretta Sanchez’s CA-47 has dipped from 65% Latino to 61% Latino. I should say that I was somewhat ambivalent about this latter move, but it’s a necessary tradeoff if CA-48 is to become a solid majority-minority seat in its own right. More importantly, I suspect that the actual Census figures will make it quite easy to turn CA-48 into a majority-minority Irvine-based seat alongside an Anaheim-based CA-47 district with a Latino percentage about where it’s at now.

Otherwise, there seems little doubt that three compact majority-Latino seats can be anchored in San Bernardino, Chino, and Riverside. Beyond that, pulling CA-46 out of Palos Verdes virtually assures that it becomes majority-minority – even if only slightly so – and CA-45 is probably even more Latino than the ACS figures project.

Finally, it’s also worth noting that CA-40 and CA-41 are each 51% white on this ACS map, so they may actually be majority-minority in the Census count.

Partisan Impact: The partisan impact for the Inland Empire is perhaps the most substantial aside from the Central Valley. The new Riverside seat is virtually assured to be strongly Dem – and basically replaces the current heavily-gerrymandered Dreier seat. Meanwhile, Gary Miller’s seat goes from a 53% McCain district to a 55% Obama district.

In Orange County, the most significant impact is on Campbell who goes from a 49%O-49%M district to a 53% Obama district. Rohrabacher’s seat becomes just slightly less secure on my map (going from 48%O/50%M to 50%O/48%M) but it’s worth noting that if CA-46 were to take in any more of Long Beach, or if it took in the part of LA County running more along the county border rather than along the Long Beach coastline, then it would become steadily more Democratic.

On the flip-side, CA-40 and CA-44 both become more solidly GOP as white voters get packed here to make way for the majority-minority seats. CA-44 in particular goes from a 50% Obama district to a 57% McCain district.

Incumbents: Several incumbents get displaced by this mapping scheme. Gary Miller lives in Diamond Bar which ends up in the CA-40 district. This would probably be just as well because if something like these maps were the case then it makes far more sense for Miller to challenge Royce (Fullerton) in a primary than to run in the CA-42 district. If CA-40 doesn’t enter LA County, then I think the most likely alternative is for Miller to end up in one of the ultra-Dem LA County districts, so my map is probably about the best-case scenario for him.

This map also draws Lewis (Redlands) and Baca (Rialto) into the same CA-43 district, but I’m sure Lewis could easily run in CA-41 regardless (and he’s reportedly considering retirement anyhow). Finally, Calvert lives in Corona which ends up in CA-42 here, but I’m sure he’d run in the CA-44 district (or its equivalent) no matter where he ends up.

San Diego

Below I’ve included two maps. The first is a broader view of SoCal while the second is a closer view of San Diego so that it’s clear exactly where I’ve drawn the lines.

In my view, this mapping scheme is the most likely arrangement for San Diego County. The city and suburbs of San Diego can clearly anchor two compact seats, and most people seem to agree that Imperial County is most ‘naturally’ attached to San Diego County versus Riverside County. Once those decisions are made, then the rest seems obvious: maximize Latino percentage in CA-51, turn CA-52 into a majority-minority district, and then place CA-50 & CA-49 northward along the coast.

That said, I realize that there’s a contingent that favors an Imperial to Riverside mapping scheme instead, so I’ve actually decided to create an alternative map on that basis. For the sake of keeping things clear, and since the main body of this diary is long enough as it is, I’ll post that separately in the comments.

For now, here are the partisan figures for the five San Diego County districts. Once again, I’ll post further comments after the maps.

CA-49 (R-Issa): 47% Obama – 51% McCain

CA-50 (R-Bilbray): 50% Obama – 49% McCain

CA-51 (D-Filner): 57% Obama – 42% McCain (76% Minority – 61% Latino)

CA-52 (R-Hunter): 54% Obama – 44% McCain (55% Minority – 32% Latino)

CA-53 (D-Davis): 63% Obama – 36% McCain



VRA Implications: The main VRA implications are that I’ve pushed the Latino percentage of CA-51 from 53% to above 60% and I’ve turned CA-52 into a majority-minority district. I chose CA-52 instead of CA-53 because, much to my surprise, when I looked at what remained after I pushed CA-51 to 60% Latino it was clear that CA-52 could much more easily become majority-minority than could CA-53. When I tried doing it with CA-53 instead, I ended up with far more weirdly shaped districts. That said, we can’t rule out the possibility that the actual Census figures will make CA-53 the more viable majority-minority district.

It’s also worth noting that CA-52 was already a 52% Obama district when I initially mapped it based on geographic cohesion without regard to minority percentage. The ‘VRA modification’ just bumped it up, obviously.

Partisan Impact: The main partisan consequence of this mapping scheme is to turn CA-52 from a 53% McCain district to a 54% Obama district.

This is what it comes down to for San Diego, as I see things: CA-51 and CA-53 will be safe Dem no matter what. (I’ve seen a fantasy floating around that pushing up the minority percentage of CA-51 might somehow endanger Susan Davis. This is clearly false. The heavily Dem western parts of San Diego city will anchor a Democratic district no matter what happens with CA-51.) Now, it might well turn out that Filner is subject to a strong Latino primary challenge (assuming he doesn’t run for mayor of San Diego), but that won’t matter in partisan terms.

On the flip-side, CA-49 and CA-50 are likely to remain GOP leaning much as they are now (they each become a bit less GOP on my map, but should still be expected to elect Republicans for the time-being, and certainly to re-elect the current incumbents).

The only real question is what happens with CA-52. In short, the more compact CA-52 becomes the more Democratic it becomes. Since the California guidelines mandate compactness except where VRA requirements suggest otherwise, and especially since a more compact CA-52 district in the eastern suburbs of San Diego city can be made majority-minority (which is not the case if a district similar to the current CA-52 in the San Diego County hinterland were maintained) then I think this is the more likely outcome.

Incumbents: Issa and Bilbray live just 8 miles away from each other, in Vista and Carlsbad respectively, so it’s quite likely they’ll end up mapped in the same district. My map happens to put them both in CA-49 (while my alternative Imperial-to-Riverside map happens to put them both in CA-50). The short of it is that one or the other will very likely have to move or else run in a district where he no longer resides. The other three incumbents are very unlikely to be displaced.

AL/MS/LA/AR 7 VRA Seats

So, I’ve previously posted maps featuring 2 minority-majority seats in South Carolina and 6 minority-majority seats in Georgia. In the meantime, I’ve been working on maps designed to maximize majority-minority seats in the rest of the South (excluding Florida & Texas, for now).

I’ve decided to go ahead and post the maps that I’ve settled on for Alabama, Mississippi, Louisiana, and Arkansas below. I’ve managed to create 2 reasonably compact majority-minority seats for each state except Arkansas, where I’ve created 1 (more would be impossible). I haven’t marked district numbers, but rather have marked the minority percentage on the relevant districts.

For the record, it seems impossible to create 2 minority-majority seats in Tennessee (at least not with any semblance of compactness). The Memphis area seat is as good as it gets.

Anyhow, the maps are after the fold!

For Alabama, one district is a Birmingham based seat and the other is a Mobile to Montgomery seat.

With Mississippi, one seat is a Jackson based seat and the other covers the rural Mississippi River valley.

In Louisiana, I have the New Orleans based seat (which obviously has to pick up substantial geographic area since the state is losing a seat) and the other pulls together Baton Rouge, Lafayette, and Alexandria.

Finally, for Arkansas, I have a district that covers minority communities in Little Rock, Pine Bluff, the southwest corner of the state, and along the Mississippi.

I have no idea what VRA interpretation the DOJ will pursue in this round of redistricting (much less the DC Circuit), but for what it’s worth, these are the types of maps that I would propose for these states were it up to me. I think maximizing the number of (compact) minority-majority seats (particularly in the Deep South) is far preferable to the ultra-packed minority seats that currently predominate. And, I think it’s more consistent with the objectives of the VRA.

Whether the DOJ sees things my way is another matter.

Georgia w/ 6 VRA seats

OK, so the recent thread on potential VRA seats in South Carolina has got me thinking about other Southern states. Leaving aside Texas & Florida, which are special cases in my view, the most obvious candidate seems to be Georgia as it also gained a seat for this redistricting cycle.

In short, I wanted to see whether I could increase the number of compact minority-majority seats. As an initial (somewhat crude) effort, the following map features six.

One thing I’ve realized, having made this map, is that the apparent conventional wisdom that Georgia’s 14th seat will be a heavily Republican seat north of Atlanta may very well be incorrect. It’s quite easy to draw a fairly compact minority-majority seat north of GA-04 & GA-05, and I’d say a strong argument could be made that the VRA would require as much.

Whether it would require that GA-12 become a bare majority-minority district as in my map below is another matter. Anyhow, more after the fold!

Below I’ve posted a statewide map and a close-up of the Atlanta region. The following districts on this map are majority-minority.

Downstate:

GA-02: 51% minority (45% Black – 4% Latino)

GA-12: 51% minority (46% Black – 2% Latino)

Atlanta Metro:

GA-04: 72% minority (56% Black – 10% Latino)

GA-05: 67% minority (53% Black – 10% Latino)

GA-13: 64% minority (52% Black – 8% Latino)

GA-14: 54% minority (22% Black – 20% Latino)

The usual caveat applies that my maps are only as good as the data at Dave’s app.

Here are the maps:

MD Redistricting D+2

So, I was sitting around thinking to myself that there’s no good reason why Maryland elects 2 Republicans to Congress, and then I remembered that there is: Because the 2001 focus was on ousting Connie Morrella and turning Ehrlich’s district blue. Well, Morrella is gone and Maryland has only trended Democratic over the past decade, so I don’t see any reason why a Massachusetts style delegation should be unreasonable.

Again, I don’t know whether this has been discussed at any great length here, but it took me about 15 minutes to throw together an 8-0 Dem map of Maryland that retains 2 majority-minority districts and actually features more compact districts than the current map.

The key, quite simply, is first splitting MD-06 (Bartlett-R) and joining each half with half of Montgomery County, and then splitting the Eastern Shore MD-01 (Harris) into three districts. The map and the Obama/McCain numbers are after the fold.

MD-01 (Harris-R)

Current: 40% Obama to 58% McCain

Projected: 54% Obama to 45% McCain

MD-02 (Ruppersberger-D)

Current: 59% Obama to 39% McCain

Projected: 56% Obama to 42% McCain

MD-03 (Sarbanes-D)

Current: 60% Obama to 38% McCain

Projected: 56% Obama to 43% McCain

MD-04 (Edwards-D)

Current: 85% Obama to 14% McCain (57% black)

Projected: 88% Obama to 11% McCain (62% black)

MD-05 (Hoyer-D)

Current: 68% Obama to 31% McCain

Projected: 55% Obama to 44% McCain

MD-06 (Bartlett-R)

Current: 39% Obama to 59% McCain

Projected: 62% Obama to 36% McCain

MD-07 (Cummings-D)

Current: 79% Obama to 19% McCain (59% black)

Projected: 70% Obama to 29% McCain (46% black)

MD-08 (Van Hollen-D)

Current: 74% Obama to 25% McCain

Projected: 62% Obama to 37% McCain

So, I’m just curious if anyone can think of a decent reason why the Maryland legislature won’t redistrict the state with 8 Democratic seats. I realize that the black percentage of MD-07 drops notably on my map, but there should be little problem pushing it back up while maintaining the basic partisan performance of the remaining districts.

If I can throw this together in 15 minutes I’m sure the Maryland legislature can figure it out well enough in six months.

MN Redistricting D+3?

So, I haven’t noticed any discussion about Minnesota redistricting, and it’s true that this probably isn’t the most exciting state when it comes to that, but I decided to make a map anyhow.

A couple of things are worth noting ahead of time:

1) Four of the last five redistricting cycles in Minnesota have resulted in court-drawn maps because of legislative deadlock.

2) The population growth in Minnesota has been almost entirely in the Twin Cities suburbs represented by Bachmann and Kline, so the main changes will involve those districts shedding voters.

In any case, I decided to take the new population estimates on Dave’s app and make a ‘least change’ map much as I would expect a court panel to implement. The results are after the fold.

Below I have posted a full-state map and a close-up of the Twin Cities. The changes are not particularly exciting, but what I want to highlight is that this suggests opportunity for up to three Democratic pick-ups in the 2012 election. I’ve used the precinct figures at the Minnesota SoS website to calculate the Obama/McCain numbers for the new districts that I project compared to the current districts. These are the Obama/McCain percentages with third party votes excluded.

MN-01 (Walz-D)

Current: 52.4% Obama to 47.6% McCain

Projected: 52.0%Obama to 48.0% McCain

There is no meaningful change here.

MN-02 (Kline-R)

Current: 49.3% Obama to 50.7% McCain

Projected: 50.0% Obama to 50.0% McCain

Obama would’ve won the projected district by a tiny margin of 268 votes. What is most worth noting is that the MN-02 district will surely need to shed territory, and that the more territory that it needs to shed the less Republican it will become, because the Republican votes are more concentrated along the southern and western parts of the district. The DCCC should seriously consider contesting this district in my view regardless.

MN-03 (Paulsen-R)

Current: 53.3% Obama to 46.7% McCain

Projected: 53.0% Obama to 47.0% McCain

This Obama district becomes slightly less so, but there’s also little doubt in my view that the Democrats need to recruit a strong candidate here. They should not have lost the district in the first place after Ramstad’s retirement.

MN-04 (McCollum-D)

Current: 65.7% Obama to 34.3% McCain

Projected: 65.1% Obama to 34.9% McCain

No excitement here.

MN-05 (Ellison-D)

Current: 75.7% Obama to 24.3% McCain

Projected: 75.6% Obama to 24.4% McCain

Even less here.

MN-06 (Bachmann-R)

Current: 45.5% Obama to 54.5% McCain

Projected 45.1% Obama to 54.9% McCain

Unfortunately, Bachmann gets a slight bump on my map. I would add, however, that this district (along with MN-03) ends up with a disproportionately high number of 2008 voters on my map (nearly 400,000 versus somewhat less than 350,000 voters for the others). That suggests to me that the population estimates on Dave’s app may be low for MN-06 and MN-03. If that’s the case, MN-03 will not expand as much and MN-06 will need to shed voters. If that’s true, this district will become more Democratic the more that it contracts toward the Twin Cities.

MN-07 (Peterson-D)

Current: 48.6% Obama to 51.4% McCain

Projected: 48.0% Obama to 52.0% McCain

There is no meaningful change here. Still a swing district.

MN-08 (Cravaack-R)

Current: 54.4% Obama to 45.6% McCain

Projected: 54.3% Obama to 45.7% McCain

This is obviously a prime target for a takeback bid – hopefully by someone younger than his mid-70s. There was no call for Oberstar losing this district, and there’s no good reason why Cravaack should still be representing it in 2013.

That said, if the MN-06 district needs to contract more than above, then this district is likely to pick up the greater part of the spillover, which will make it more GOP. How much is an open question.

Any thoughts?

VA Redistricting D+1?

First of all, I’m rather new to Swing State Project, so my apologies ahead of time if this diary is treading ground that’s already been discussed.

In any case, I decided to do a Virginia redistricting map after reading that Governor McDonnell had created a bipartisan advisory committee.  Three points are worth noting about Virginia redistricting:

1) The legislature is under split control.

2) Virginia redistricting is always highly scrutinized for VRA purposes.

3) Virginia redistricting has tended to favor ‘least-change’ maps with whole county lines wherever possible.

In any case, I was just curious to do a ‘least-change’ map based on the new population estimates at Dave’s app to see whether it seemed any of the Virginia districts might be significantly affected from a partisan standpoint. The one that jumps out at me is VA-10. The only other district that changed significantly was VA-05, which picks up heavily Republican suburbs of Richmond.

Here’s my statewide map. More on VA-10 after the fold!

According to the estimates on Dave’s App, the NoVa seats need to shed population. That, of course, is to be expected considering NoVa accounts for the bulk of Virginia population growth. When applying the new population estimates at Dave’s app, VA-08 needs to gain 12,000 while VA-11 needs to shed 25,000 and VA-10 needs to shed 100,000. Even before I made my ‘least-change’ map it was readily apparent that VA-10 would have to contract into more of a Fairfax/Loudoun based district than it is now – and therefore would become more Democratic.

In any case, here’s a closer look at the district that I ended up with:

The VA-10 district was already an Obama district in 2008: Obama won the district 53% to 46%. The question then is how significantly the contraction might bump the Democratic performance.

On my map, VA-10 loses all of Warren County and all of Winchester City. It loses 60% of the Frederick County population and goes from half of the Fauquier County population to one third.  These areas combined voted 43% Obama to 56% McCain. Of these, only Winchester City voted for Obama, so it’s worth noting the GOP loss would be greater if, say, VA-10 retained Winchester and instead lost more of Fauquier. The district also loses 15,000 Fairfax Co. voters to VA-08 and VA-11 and gains 22,000 Prince William Co. voters from VA-01 – which is essentially a wash.

So, I looked at the 2008 countywide figures and came up with an estimate of VA-10 votes lost assuming that they were uniformly spread across these counties (this method should actually slightly favor the GOP, because NoVa gets steadily more Republican the further out you go). I then subtracted these figures from the actual 2008 VA-10 figures.

The outcome is a 55% Obama to 44% McCain district. So then, this would clearly give a boost to a Democratic challenger against Frank Wolf. More importantly, Wolf will be 73 years old in 2012, so an open seat such as this would be a prime Democratic target.

In any case, here’s a final map comparing my projected VA-10 district with the current district:

California Redistricting!

We’ve already had a lively discussion with regard to California redistricting in this diary below, but now that I have diary rights I want to finally post my own projected map of the new California districts. Needless to mention, redistricting California is a daunting task, particularly in light of the newly approved ‘nonpartisan’ commission. So, a few notes and caveats are in order.

1) My map is only as good as the data provided by Dave’s Redistricting App. Clearly then, to whatever extent that data is invalid, my output will be likewise.

2) In this installment I’ll mainly just outline the process that I followed in placing the districts. I might go over the political results or the VRA ramifications in a subsequent installment if there seems to be enough interest. In short, I welcome any feedback or criticism regarding my decisions. I want to be reasonably confident about the validity of my mapping scheme before I go into much detail about how it affects individual districts.

3) I did not take any account of the current districts when putting together my map. However, I went back and numbered them based on the closest current district merely so as to facilitate discussion. I have added the incumbent that holds that currently numbered district, though I generally have no idea whether they’d still live in said districts. Also, when I doublechecked this afternoon I realized that several of the LA County and OC County districts were not optimally labelled in the map I posted to the other thread. More on that when I get to it.

4) The purpose of this exercise is in part to counter the popular notion that we can’t project some reasonably accurate version of the new California district configuration. My basic premise is that: If the commission simply follows the rule of crossing county and city boundaries only when necessary, then in most cases it’s obvious which way to go, so long as you have a starting point.

5) None of my districts deviate by more than +/- 600 people. The majority deviate by less than +/- 200. Again, this is based on Dave’s app of course. And, speaking of Dave’s app: It’s glitchy at spots. I’ve edited these glitches out of the maps below.

So, without further ado, here we go:

To begin with, here’s my statewide map:

Now I chose San Francisco as a natural starting point. The simple reason for this being that it’s bounded on three sides by water boundaries. It’s also one of the state’s leading cities and a classic tenet of purely geographic districting is to minimize the subdivision of major population centers. Below is my final map of the Bay Area. This is the process by which I arrived at these boundaries:

1) I began with CA-08 in San Francisco County, then simply added voting blocks horizontally until I reach the correct population. Now, there’s been some discussion about the idea of instead dividing the county roughly in half and joining the northern district with Marin County across the Bay. For the record, I tried that just to see what happens. In short, all of these compact districts around the Bay are heavily Democratic districts, and taking CA-08 north into Marin simply rotates them clockwise, still leaving you with a set of heavily Democratic districts. The only meaningful difference is that population centers are harder to keep intact.

CA-08 (Pelosi – D): 85% Obama / 13% McCain

2) I started CA-12 with the remainder of San Francisco County and finished it with San Mateo County except for Redwood City.

CA-12 (Speier – D): 74% Obama / 24% McCain

3) I started CA-14 with Redwood City and added Santa Clara to complete the district. I then put San Jose in its own CA-15 district, and then started CA-16 with the rest of Santa Clara County.

CA-14 (Eshoo – D): 73% Obama / 25% McCain

CA-15 (Honda – D): 70% Obama / 28% McCain

4) I wasn’t sure which way to go with CA-16, so I switched gears to start CA-17 with Santa Cruz County. I then added Monterey County to CA-17. It then became clear enough that I should add San Benito County to CA-16, because if I added it to CA-17 it would not take up the whole county.

5) At this point it became clear enough that I should complete CA-16 with the eastern part of Alameda County.

CA-16 (Lofgren – D): 64% Obama / 34% McCain

6) All of central Alameda County can then become CA-13 (Fremont, Union City, Pleasonton, Hayword) and then Oakland can take up most of CA-09.

CA-13 (Stark – D): 72% Obama / 26% McCain

7) I then finished up CA-09 with the western tip of Contra Costa County, then added CA-10 to take up the central county through Concord and Danville.

CA-09 (Lee – D): 89% Obama / 9% McCain

CA-10 (Garamendi – D): 69% Obama / 30% McCain

8) I wasn’t sure where the rest of Contra Costa belonged, so I started CA-07 with Solano County. I wasn’t sure where to go for the rest of CA-07 so I switched to CA-06 in Marin County, then finished it up with most of Sonoma County.

CA-06 (Woolsey – D): 76% Obama / 22% McCain

OK, so now what? More after the map…

Below I have my maps of Northern California and the Sacramento area.

9) As I pondered CA-07, I realized that I could add all of Napa County and all of Yolo County except for West Sacramento. The alternatives would either create a weirdly shaped district or unnecessarily divide Sacramento.

CA-07 (Miller – D): 65% Obama / 33% McCain

10) I then started CA-01 with Mendocino, Trinity, Humboldt, Del Norte, and Lake counties. It also became clear that the rest of Sonoma belonged in CA-01. The CA-01 district still needed 365,000 people.

11) I went ahead and added CA-05 in West Sacramento (Yolo County) and Sacramento proper. Sacramento should clearly anchor 2 districts, so I placed CA-03 fully in the eastern part of the county.

CA-05 (Matsui – D): 69% Obama / 29% McCain

CA-03 (Lungren – R): 50% Obama / 48% McCain

12) I still had 55,000 people left in the southwestern salient of Sacramento County. It now became clear enough that CA-11 should take those, the remaining half of Contra Costa County, and San Joaquin including half of Stockton.

CA-11 (McNerney – D): 59% Obama / 39% McCain

13) I now added Colusa, Glenn, Tehama, Shasta, and Siskiyou counties to CA-01. I still needed 23,000 more people. The most efficient way to finish up CA-01 was with Modoc County and part of Lassen County.

CA-01 (Thompson – D): 50% Obama / 47% McCain

14) I could now start CA-02 with the rest of Lassen. I then added Plumas, Butte, Sierra, Yuba, Nevada, and Sutter. This left me needing 170,000 people. The obvious place to get them was Placer County except for the Rocklin/Roseville corner.

CA-02 (Herger – R): 47% Obama / 51% McCain

15) It now made sense to start CA-04 with this corner of Placer, and to add the sparsely populated eastern counties of El Dorado, Amador, Calaveras, Alpine, Mono, Tuolomne, and Mariposa. But, where to go now? More after the maps…

Below I’ve added my maps of the Central Valley and Southern California. The next set of decisions involving the Central Valley are the ones that I think are most debatable, as I’ve stated previously. In any case, here’s my reasoning

16) It made sense to start CA-18 with the rest of San Joaquin County and then finish it off in Stanislaus County, including the city of Modesto.

CA-18 (Cardoza – D): 54% Obama / 44% McCain

17) I then started CA-19 with the remainder of Stanislaus County and all of Merced County. At this point, the next population center was Fresno, but I had to decide what to do with Madera County that was in the way. I played with several alternatives and realized that my options were to either split Madera County or split the city of Fresno or end up with several weirdly shaped districts. I chose to split Madera County and then finish off CD-19 with western half of Fresno County.

CA-19 (Denham – R): 49% Obama / 49% McCain

18) It then made sense to give Fresno it’s own CA-21 district, and to place the sparsely populated eastern remainder of Madera & Fresno counties in CA-04.

CA-21 (Nunes – R): 51% Obama / 47% McCain

19) At this juncture, it seemed fairly obvious to start CA-20 with Kings and Tulare counties. Once I did that, it was obvious that CA-04 should finally be completed with Inyo and the sparsely populated east of San Bernardino County.

CA-04 (McClintock – R): 42% Obama / 56% McCain

20) I now decided it was time to switch back to the coast. It was clear that I should finish CA-17 with the Cambria corner of San Luis Obispo County. I could then start CA-23 with the rest of San Luis Obispo and add all of Santa Barbera County, which left me needing 67,000 people.

CA-17 (Farr – D): 71% Obama / 27% McCain

21) I then switched back to CA-20, finishing it in Kern County. Then I added CA-22 fully contained in Kern County, which left 12,000 people in one corner. I decided to add these to CA-04, swapping them out for 12,000 in San Bernardino (which didn’t change the partisan breakdown of CA-04).

CA-20 (Costa – D): 43% Obama / 56% McCain

CA-22 (McCarthy – R): 39% Obama / 59% McCain

22) I then added CA-41 in central San Bernardino County, finished CA-23 in northern Ventura County, and placed CA-24 in southern Ventura County. This left me with 34,000 people in Ventura County and I was ready to start on LA – after the maps!

CA-41 (Lewis – R): 44% Obama / 53% McCain

CA-23 (Capps – D): 58% Obama / 40% McCain

CA-24 (Gallegly – R): 55% Obama / 44% McCain

Below is my LA County map. Note that the district numbering has changed from the map that I posted in the other thread, because when I went back over it I realized that the current Dreier district (CA-26) had been dismantled and that the one which I had labeled as CA-26 should’ve been Chu’s CA-32, while the one that I originally labelled as CA-32 should’ve clearly been CA-39 (Linda Sanchez).

23) Anyhow, here is how I proceeded with LA County (with the above amendments):

CA-25: I started with northern LA County, and added the San Fernando Valley.

CA-30: I finished Ventura County, and added the Westside cities.

CA-27: I took the rest of San Fernando, Burbank, and Glendale.

CA-33: I started with Culver City, added Santa Monica, and Beverly Hills.

CA-28: Centered on Hollywood.

CA-29: Centered on Pasadena.

CA-32: I started in Glendora and took in the northern suburbs.

CA-35: Centered on Inglewood.

CA-36: Centered on Rancho Palos Verdes – with Redondo Beach and Manhattan Beach.

CA-38: Centered on Pomona and Covina.

CA-31: Centered on downtown LA.

CA-34: Centered on Huntington Park.

CA-37: Centered on Compton.

CA-39: East LA, leaving the southeast waterfront corner of Los Angeles County.

CA-25 (McKeon – R): 53% Obama / 45% McCain

CA-27 (Sherman – D): 71% Obama / 27% McCain

CA-28 (Berman – D): 80% Obama / 18% McCain

CA-29 (Schiff – D): 69% Obama / 29% McCain

CA-30 (Waxman – D): 63% Obama / 35% McCain

CA-31 (Becerra – D): 80% Obama / 17% McCain

CA-32 (Chu – D): 58% Obama / 40% McCain I think Dreier actually lives here.

CA-33 (Bass – D): 77% Obama / 22% McCain

CA-34 (Roybal-Allard – D): 76% Obama / 22% McCain

CA-35 (Waters – D): 88% Obama / 11% McCain

CA-36 (Harman – D): 59% Obama / 39% McCain

CA-37 (Richardson – D): 84% Obama / 15% McCain

CA-38 (Napolitano – D): 64% Obama / 34% McCain

CA-39 (Linda Sanchez – D): 60% Obama / 38% McCain

With LA out of the way, it’s time to wrap up SoCal after the map.

Below I have added my final maps. The first covers Orange County & the Inland Empire; the second covers the San Diego area. Here is how I proceeded to map these districts.

24) I started with Orange County by taking the last bit of LA and joining it with Huntington Beach to make CA-46. I then put CA-47 in Fullerton, Anaheim, and Buena Park and Irvine/Newport Beach in CA-48.

CA-46 (Rohrabacher – R): 48% Obama / 50% McCain

CA-47 (Loretta Sanchez – D): 52% Obama / 46% McCain

CA-48 (Campbell – R): 55% Obama / 43% McCain

25) I then put the city of San Bernardino in CA-43, and finished off San Bernardino County with CA-42, which still needed about 90,000 people. However, I wasn’t sure whether these should come from Orange County or Riverside County.

CA-43 (Baca – D): Obama 61% / McCain 37%

26) I now switched to Riverside County by placing CA-45 in the eastern 2/3 anchored with  Palm Springs, and then centered CA-44 on the city of Riverside and Moreno Valley. I think CA-44 might actually be the vacant seat, so maybe I should’ve labeled it CA-26..

CA-45 (Bono Mack – R): 51% Obama / 48% McCain

CA-44 (Calvert – R, or maybe vacant): 58% Obama / 40% McCain

27) I then started CA-51 with Imperial County and added eastern San Diego County basically up to the coastal strip. That still left me needing 440,000 people, and neatest way to add them was to take the South Bay area (Chula Vista & Imperial Beach).

CA-51 (Filner – D): 51% Obama / 47% McCain

28) The city of San Diego can clearly anchor two compact districts, so I just split it down the middle with CA-52 and CA-53. I then added CA-50 along the coast, and started CA-49 in Oceanside.

CA-50 (Bilbray – R): 50% Obama / 48% McCain

CA-52 (Hunter – R): 55% Obama / 44% McCain

CA-53 (Davis – D): 66% Obama / 32% McCain

29) At this point it’s clear that if CA-49 goes into Riverside County, either Riverside or Orange will be subdivided once more than necessary. So, I finish off Orange County with CA-49 and CA-40, leaving 15,000 people in the southeast corner.

CA-40 (Royce – R): 43% Obama / 55% McCain

CA-49 (Issa – R): 46% Obama / 52% McCain

30) This leaves only Riverside County, where I wrap up CA-42 with Norco, and create what is essentially a new Inland Empire seat from Temecula to Corona (along with those 15,000 people from the corner of O.C.) I’ve numbered it CA-26, but it doesn’t actually overlap Dreier’s current district, and I think Calvert lives here in Corona, which would make the CA-44 district the vacant one.

CA-42 (Miller – R): 53% Obama / 45% McCain

CA-26 (Dreier – R; but actually either vacant or maybe Calvert – R): 44% Obama / 55% McCain

Whatever the case, I think that more than covers it! Please let me know what you think of my maps. Am I on track or way off base??