VotePredictor
past elections

Washington Senate

Patty Murray (D) vs Dino Rossi (R)

Actual result
D+4.7
Final polls said
D+1.5
10 late polls · ✓
Model predicted
D+3.7
Winner
Dem

"Final polls said" averages polls from the last ~3 weeks — the call right before the vote, and how pollsters are rated. The model's prediction is walk-forward (trained only on earlier races).

Final rankings

How everyone who called this race did, ranked — VotePredictor shown inline (★).

Pollsters — each pollster's final poll vs the result

#PollsterFinal callMissCalled
1VotePredictorD+3.71.0
2University of Washington Center for Survey ResearchD+6.01.3
3YouGovD+2.72.0
4Scott Rasmussen (Rasmussen Reports)D+2.02.7
5Big VillageD+8.03.3
6Marist CollegeD+1.03.7
7ccAdvertisingD+0.24.5
8SurveyUSAEVEN4.7
9Public Policy PollingR+2.06.7
10Elway ResearchD+15.010.3
11Fabrizio, Lee & Associates/McLaughlin & AssociatesR+6.010.7

Polls (24)

PollsterDatenPollMiss
Scott Rasmussen (Rasmussen Reports)2010-10-301000D+2.03
Public Policy Polling2010-10-302055R+2.07
YouGov2010-10-27849D+2.72
Marist College2010-10-27638D+1.04
Scott Rasmussen (Rasmussen Reports)2010-10-27750R+1.06
SurveyUSA2010-10-26678EVEN5
University of Washington Center for Survey Research2010-10-23695D+6.01
Scott Rasmussen (Rasmussen Reports)2010-10-17750D+3.02
Marist College2010-10-16589D+1.04
Public Policy Polling2010-10-151873D+2.03
SurveyUSA2010-10-13612D+3.02
Big Village2010-10-10850D+8.03
University of Washington Center for Survey Research2010-10-09500D+8.03
Elway Research2010-10-09450D+15.010
Scott Rasmussen (Rasmussen Reports)2010-10-091000R+1.06
ccAdvertising2010-10-081991D+0.25
Scott Rasmussen (Rasmussen Reports)2010-10-06750R+3.08
Scott Rasmussen (Rasmussen Reports)2010-09-28750R+1.06
Fabrizio, Lee & Associates/McLaughlin & Associates2010-09-26500R+6.011
Scott Rasmussen (Rasmussen Reports)2010-09-251000D+1.04
SurveyUSA2010-09-20609D+2.03
Scott Rasmussen (Rasmussen Reports)2010-09-14750D+5.00
Big Village2010-09-12906D+9.04
Elway Research2010-09-11501D+9.04