VotePredictor
past elections

Kansas Senate

Jim Slattery (D) vs Pat Roberts (R)

Actual result
R+23.6
Final polls said
R+24.3
3 late polls · ✓
Model predicted
R+22.7
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
1YouGovR+24.00.4
2VotePredictorR+22.70.9
3SurveyUSAR+27.03.4
4Public Opinion StrategiesR+28.04.4
5Scott Rasmussen (Rasmussen Reports)R+19.04.6

Polls (8)

PollsterDatenPollMiss
SurveyUSA2008-10-27626R+27.03
YouGov2008-10-25499R+24.00
SurveyUSA2008-10-21613R+22.02
Scott Rasmussen (Rasmussen Reports)2008-10-13500R+19.05
Public Opinion Strategies2008-10-12500R+28.04
Public Opinion Strategies2008-10-05500R+29.05
SurveyUSA2008-09-21666R+20.04
Scott Rasmussen (Rasmussen Reports)2008-09-18500R+20.04