VotePredictor
past elections

Illinois Senate

Alexi Giannoulias (D) vs Mark Kirk (R)

Actual result
R+1.6
Final polls said
R+1.1
12 late polls · ✓
Model predicted
R+0.9
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
1Mason-Dixon Polling & StrategyR+2.00.4
2Suffolk UniversityR+1.00.6
3VotePredictorR+0.90.7
4We Ask AmericaR+2.30.7
5Southern Illinois University Paul Simon Public Policy InstituteR+0.51.1
6Market Shares Corp.R+3.01.4
7Public Policy PollingR+4.02.4
8Scott Rasmussen (Rasmussen Reports)R+4.02.4
9Big VillageD+1.02.6
10Impact ResearchD+2.03.6
11YouGovD+2.74.3
12GQRD+3.04.6
13Global Strategy GroupD+3.04.6

Polls (25)

PollsterDatenPollMiss
Public Policy Polling2010-10-30814R+4.02
Scott Rasmussen (Rasmussen Reports)2010-10-301000R+4.02
YouGov2010-10-27672D+2.74
Impact Research2010-10-27400D+2.04
Scott Rasmussen (Rasmussen Reports)2010-10-26750R+4.02
Scott Rasmussen (Rasmussen Reports)2010-10-231000R+2.00
Impact Research2010-10-22600D+2.04
Market Shares Corp.2010-10-20700R+3.01
Mason-Dixon Polling & Strategy2010-10-19625R+2.00
Scott Rasmussen (Rasmussen Reports)2010-10-18750R+4.02
Impact Research2010-10-15601D+5.07
Public Policy Polling2010-10-15557R+2.00
GQR2010-10-11600D+3.05
Scott Rasmussen (Rasmussen Reports)2010-10-11750D+1.03
Southern Illinois University Paul Simon Public Policy Institute2010-10-05758R+0.51
Scott Rasmussen (Rasmussen Reports)2010-10-04750R+4.02
Suffolk University2010-09-30500R+1.01
Big Village2010-09-26828D+1.03
Market Shares Corp.2010-09-26600D+2.04
Scott Rasmussen (Rasmussen Reports)2010-09-251000R+2.00
Global Strategy Group2010-09-25604D+3.05
Public Policy Polling2010-09-25470R+4.02
Scott Rasmussen (Rasmussen Reports)2010-09-21750R+3.01
We Ask America2010-09-131379R+2.31
Scott Rasmussen (Rasmussen Reports)2010-09-07750R+4.02