VotePredictor
past elections

Illinois Governor

Pat Quinn (D) vs William E. Brady (R)

Actual result
D+0.8
Final polls said
R+5.0
8 late polls · ✗
Model predicted
R+5.7
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
1Global Strategy GroupR+1.01.9
2Big VillageR+2.02.9
3Market Shares Corp.R+4.04.8
4Mason-Dixon Polling & StrategyR+4.04.8
5Suffolk UniversityD+6.05.2
6Public Policy PollingR+5.05.8
7VotePredictorR+5.76.5
8Scott Rasmussen (Rasmussen Reports)R+6.06.8
9YouGovR+7.38.2
10Southern Illinois University Paul Simon Public Policy InstituteR+8.69.4
11We Ask AmericaR+9.510.3
12SurveyUSAR+13.013.8

Polls (20)

PollsterDatenPollMiss
Scott Rasmussen (Rasmussen Reports)2010-10-301000R+6.07
Public Policy Polling2010-10-30814R+5.06
YouGov2010-10-27660R+7.38
Scott Rasmussen (Rasmussen Reports)2010-10-231000R+5.06
Market Shares Corp.2010-10-20700R+4.05
Scott Rasmussen (Rasmussen Reports)2010-10-20750R+8.09
Mason-Dixon Polling & Strategy2010-10-19625R+4.05
Public Policy Polling2010-10-15557R+1.02
Scott Rasmussen (Rasmussen Reports)2010-10-12750R+6.07
Southern Illinois University Paul Simon Public Policy Institute2010-10-05758R+8.69
Scott Rasmussen (Rasmussen Reports)2010-10-04500R+8.09
Suffolk University2010-09-30500D+6.05
Big Village2010-09-26828R+2.03
Market Shares Corp.2010-09-26600D+1.00
Scott Rasmussen (Rasmussen Reports)2010-09-251000R+10.011
Global Strategy Group2010-09-25604R+1.02
Public Policy Polling2010-09-25470R+7.08
We Ask America2010-09-131330R+9.510
Scott Rasmussen (Rasmussen Reports)2010-09-12750R+13.014
SurveyUSA2010-09-12750R+13.014