Crowdsourcing Project: Presidential Results by CD


A favorite reference for election junkies like those of us who inhabit this site is, of course, presidential results by congressional district. Unfortunately, most states don’t publish this data,  but it’s reliably churned out by a firm called Polidata every four years. It’s a difficult task, though, because it usually involves crunching data on a precinct level (and also figuring out what the hell to do with absentee ballots), so Polidata typically releases its findings some time in March after a presidential races.

But the good news is that, working together, we can come up with some preliminary data for at least some states. There are at least three types of states where we can get this data relatively easily:

1) States with just one at-large district (duh), like Montana.

2) States which actually publish presidential results by CD, such as Virginia.

3) States where district lines follow county lines or, in New England, township lines (or at least follow them closely), like Iowa.

Where we need help (at this stage) is in figuring out which states fall into the second and third categories. I know California also releases results by CD, but I believe a few other states do as well. And Arkansas and West Virginia follow county lines, but some other states probably do, too.

Also, let’s use this thread for brainstorming about other ways we might try to figure out presidential results by CD (short of acquiring detailed precinct-by-precinct data). Please share your thoughts in comments.

UPDATE: Jeffmd observes that some states offer easy-to-use precinct data, so where available, that might be an option as well. If you’re aware of any states which provide this information, please let us know that as well.

UPDATE 2: I’ve created a public Google Docs spreadsheet that we can use to compile a list of data sources. Please feel free to input any helpful information you’re aware of. Note that we’re not looking for the actual numbers just yet – rather, we want to know where we can find the numbers (and what format – ie, CD, county, precinct, etc. – we should be looking for). And if you are adding a URL, please use TinyURL.

30 thoughts on “Crowdsourcing Project: Presidential Results by CD”

  1. County Lines (completely): Arkansas, Iowa, West Virginia.

    I know Maryland, North Carolina, and New York published by CD for the primary, but not sure about now. Maine and Nebraska publish by CD out of necessity.

    Minnesota, Wisconsin, and Ohio publish very easy-to-use precinct data (I’d be fine with looking through those myself, this would be a few hours per state, tops).

    In Illinois, Chicago, Suburban Cook, and Lake publish precinct data as well, so you can get full data for CDs 1, 3, 4, 5, 7, 9, and 10. Again, maybe half an hour per district.

    New Hampshire follows county lines, roughly, and since no townships are split, can also be calculated without too much difficulty.  

  2. I was actually looking at New Jersey, and the majority of the CDs seem to entirely contain certain counties, with few exceptions. While not perfect, you can almost guess and calculate the PVI there.

  3. NC offers precinct data:


    Click on “Select County” at the top

    Once you’ve selected a county, click “Reports” and drop-down list of precincts is available.

    Problem is, we don’t break out our early votes by precinct, so you might only get absentee-by-mail and election day totals.

  4. The SoS of Texas apparently does not report results by CD. But their county results break out the subtotals for each of the CDs that include a part of the county. And many of the districts are comprised of many whole counties and fractions of a couple more. An old-fashioned adding machine could do it. But you’d need patience — one district has 44 counties to add up, 42 whole, two in part! Even Ciro’s district has 20 counties.

  5. I’ve been trying to build the basis for a study of who overperformed and underperformed relative to Obama and each other amongst Senate and congressional candidates. I also want to check 2004, 2006 and 2008 performances against each other, to see where the presidential vote buggered us in Congressional races this time.

    Once I’m home and have the time to waste, I’ll see what I can dig up here.

    1. when it does upload results (several months after the election), also publishes township-by-township results – further reducing the inaccuracy, especially given the “artful” way the 6th, 7th, and 12th are drawn.

    2. None of the 13 CDs contain just etire conties and many counties are split into muliple CDs. Data by municipality is better as few districts seem to take only parts of towns but both Newark and Trenton, at a minimum, are split.

      My own Essex County, for example, is split into at least three CDs with the largest chunk being in the 10th but the 8th and the 11th get multiple towns.  Bergen is in the 5th and 9th.  Passaic in the 8th and 5th. And so on.  Hudon’s splt.  Sussex, even tiny Sussex, is split.  Warren is whole.  Some of the south Jersey counties are whole.  But the east-west nature of many districts sacrews that up a lot.  The two amjority minority districts in north Jersey (10,13) also add to the mix with the “hispanic district” crossing multiple lines.

      The lines were drawn to protect the existing incumbents with the big gain over the previous map being making Rush Holt safer.  

  6. The Boston Globe has the complete Massachusetts town by town data for both 2004 and 2008, however, it may be more likely to contain errors than official returns, which at least on the SoC website, do not break down results in any useful way.

  7. VA-01 R+7

    VA-02 R+5

    VA-03 D+20

    VA-04 R+4

    VA-05 R+5

    VA-06 R+12

    VA-07 R+8

    VA-08 D+16

    VA-09 R+11

    VA-10 R+2

    VA-11 D+3

  8. FL-24(Kosmas, D):  McCain 50%, Obama 49%.  This is good news for Kosmas in a district that was drawn by Feeney himself to be “safe GOP”.  Obama came within 3,000 votes here.

    NC-09(Myrick, R):  McCain 54%, Obama 45%.  This one shows an amazing trend towards Democrats. Bush won here 63%-36% twice.

    GA-13(Scott, D):  Obama 70%, McCain 29%.  Why the did the DCCC waste money here?

    MI-01(Stupak, D):  Obama 50%, McCain 48%.  

    KS-03(Moore, D):  Obama 51%, McCain 48%.  Moore should be safe here from now on.

    MO-09(Lukkeymer, R):  McCain 55%, Obama 44%.  A pretty tough district for any Democrat these days.

    LA-04(Open):  McCain 59%, Obama 40%.  We should really try to win this one to compensate for the loss of LA-06.

    LA-06(Cassidy, R):  McCain 57%, Obama 41%.  Michael Jackson should be thrown right out on his ass by the Democrats in the state legislature for the crap he pulled that cost us this seat.  He should be made to wish that he had never done what he did.

    SC-05(Spratt, D):  McCain 53%, Obama 45%.  Pretty good performance here for Obama.

    TX-23(Rodriguez, D):  Obama 52%, McCain 47%.  Nice swing here.  Rodriquez should be fine here in the future.

    AL-02(Bright, D):  McCain 62%, Obama 37%.  One of my favorite results from election night.

    IN-01(Viclosky, D):  Obama 61%, McCain 38%.  Here lies Obama’s statewide victory margin.

    IN-06(Pence, R):  McCain 52%, Obama 47%.  We should consider targetting this one next time.  That is an awfully small McCain margin for such a right wing Republican leader.  Imagine if Henry Waxman held a district where Kerry won by only 52%-47% in 2004.  

  9. Nevada should be an easy state because it is a lot like a single district state. All you need to worry about is Clark County, which is split by all three districts in the state.  

  10. all three districts sometime this week. I already have county-level data (look for some badass maps on Monday), and most of it is pretty contiguous. But five counties are mixed, and Bernalillo County (the largest in the state) has all three counties. So that will suck, especially with 400+ precincts.

    But I’ll figure out a way.

  11. Barack Obama won Michigan’s 6th District (Southwest Corner, Kalamzoo) by a margin of 54.8 to 43.5. The raw vote total is 160,393 to 127,432.  This is without counting the votes from Allegan county, which McCain won by only 5,000 and is split between the 2nd District.  Adding Allegan County is unlikely to have an significant impact. George Bush beat John Kerry by a margin of 53-46 in 2004.  This is a swing of nearly 9 points for the Democrat.  The PVI for this election would be Approx. D+2.2.  I don’t know the exact 2004 PVI, but it’s approximately R+2, so the new averaged PVI would be D+0 to D+1.

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