VotePredictor
past elections

Washington Senate

Maria Cantwell (D) vs Michael Baumgartner (R)

Actual result
D+20.9
Final polls said
D+21.2
3 late polls · ✓
Model predicted
D+22.1
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+22.11.2
2YouGovD+18.02.9
3Public Policy PollingD+18.02.9
4SurveyUSAD+16.04.9
5Scott Rasmussen (Rasmussen Reports)D+15.05.9
6University of Washington Center for Survey ResearchD+27.56.6

Polls (9)

PollsterDatenPollMiss
YouGov2012-11-02837D+18.03
Public Policy Polling2012-11-02932D+18.03
University of Washington Center for Survey Research2012-10-24632D+27.57
Scott Rasmussen (Rasmussen Reports)2012-10-14500D+15.06
University of Washington Center for Survey Research2012-10-09644D+22.31
YouGov2012-10-08748D+19.02
Scott Rasmussen (Rasmussen Reports)2012-09-26500D+20.01
YouGov2012-09-11880D+14.07
SurveyUSA2012-09-08524D+16.05