VotePredictor
past elections

Wisconsin Senate

Russ Feingold (D) vs Ron Johnson (R)

Actual result
R+3.4
Final polls said
D+3.8
12 late polls · ✗
Model predicted
D+1.8
Winner
Rep

"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
1SurveyMonkeyR+1.02.4
2Marquette University Law SchoolD+1.04.4
3Loras College Public Opinion Survey CenterD+1.85.2
4VotePredictorD+1.85.2
5McLaughlin & AssociatesD+2.05.4
6Clarity Campaign LabsD+3.06.4
7WPA IntelligenceD+3.06.4
8YouGovD+3.06.4
9Public Policy PollingD+5.08.4
10Emerson CollegeD+5.08.4
11Monmouth University Polling InstituteD+8.011.4
12St. Norbert College Strategic Research InstituteD+12.015.4
13Gravis MarketingD+12.015.4

Forecasters — pre-election win probability, scored by Brier

#ForecasterWin probBrierCalled
1Cook PoliticalDem 50%0.250
2Inside ElectionsDem 60%0.360
3VotePredictorDem 63%0.394
4Sabato's Crystal BallDem 75%0.562
5FiveThirtyEightDem 82%0.672

Polls (19)

PollsterDatenPollMiss
SurveyMonkey2016-11-042246R+1.02
Clarity Campaign Labs2016-11-011129D+3.06
Loras College Public Opinion Survey Center2016-10-31500D+1.85
Public Policy Polling2016-10-31891D+5.08
SurveyMonkey2016-10-281195EVEN3
Marquette University Law School2016-10-281255D+1.04
Emerson College2016-10-27400D+5.08
WPA Intelligence2016-10-19400D+3.06
McLaughlin & Associates2016-10-19600D+2.05
Public Policy Polling2016-10-18804D+6.09
Monmouth University Polling Institute2016-10-17403D+8.011
St. Norbert College Strategic Research Institute2016-10-15664D+12.015
SurveyMonkey2016-10-121076D+5.08
Marquette University Law School2016-10-08878D+2.05
YouGov2016-10-06993D+3.06
Gravis Marketing2016-10-041102D+12.015
Loras College Public Opinion Survey Center2016-10-04500R+5.22
Emerson College2016-09-19700D+9.913
Marquette University Law School2016-09-17642D+5.08