VotePredictor
past elections

Missouri Senate

Claire McCaskill (D) vs Todd Akin (R)

Actual result
D+15.7
Final polls said
D+8.8
10 late polls · ✓
Model predicted
D+6.1
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
1SurveyUSAD+15.00.7
2Kiley & CompanyD+14.01.7
3Harstad Strategic ResearchD+12.03.7
4YouGovD+10.05.7
5Scott Rasmussen (Rasmussen Reports)D+8.07.7
6VotePredictorD+6.19.6
7Public Policy PollingD+4.011.7
8We Ask AmericaD+3.412.3
9Mason-Dixon Polling & StrategyD+2.013.7
10Gravis MarketingR+3.619.3
11Clout ResearchR+4.219.9

Polls (22)

PollsterDatenPollMiss
YouGov2012-11-02779D+10.06
Public Policy Polling2012-11-02835D+4.012
SurveyUSA2012-10-31589D+15.01
We Ask America2012-10-301217D+3.412
Kiley & Company2012-10-24600D+14.02
Mason-Dixon Polling & Strategy2012-10-24625D+2.014
Public Policy Polling2012-10-20582D+6.010
Kiley & Company2012-10-18679D+14.02
Scott Rasmussen (Rasmussen Reports)2012-10-17500D+8.08
Harstad Strategic Research2012-10-16603D+12.04
Clout Research2012-10-121000R+4.220
YouGov2012-10-08546D+5.011
Public Policy Polling2012-10-02700D+6.010
Scott Rasmussen (Rasmussen Reports)2012-10-02500D+6.010
Clout Research2012-09-30675R+1.918
Kiley & Company2012-09-30600D+9.07
We Ask America2012-09-261145D+0.815
Gravis Marketing2012-09-161952R+3.619
YouGov2012-09-11734D+7.09
Scott Rasmussen (Rasmussen Reports)2012-09-11500D+6.010
Clout Research2012-09-10850R+4.921
Kiley & Company2012-09-10600D+6.010