SurveyUSA (likely primary voters, 4/13-15):
Kurt Schrader (D): 23%
Steve Marks (D): 20%
Other/Undecided: 57%
(MoE: ±4.1%)
And on the GOP side…
Mike Erickson (R): 44%
Kevin Mannix (R): 40%
Other/Undecided: 17%
(MoE: ±5%)
Not surprisingly, the undecided vote is much smaller among GOP voters. Erickson was the 2006 nominee for this seat, while Mannix has run for a number of statewide offices in the past. Former gubernatorial aide Steve Marks and state Sen. Kurt Schrader, on the other hand, have lower profiles.