VotePredictor
past elections

Iowa House

J.D. Scholten (D) vs Steve King (R)

Actual result
R+3.3
Final polls said
R+8.3
4 late polls · ✓
Model predicted
R+11.9
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
1The New York Times/Siena CollegeR+4.81.4
2Change ResearchR+1.02.3
3Expedition StrategiesR+6.02.7
4Emerson CollegeR+9.36.0
5VotePredictorR+11.98.6
6WPA IntelligenceR+18.014.7

Forecasters — pre-election win probability, scored by Brier

#ForecasterWin probBrierCalled
1The EconomistRep 95%0.002
2FiveThirtyEightRep 89%0.012
3VotePredictorRep 86%0.019
4DDHQ/Decision DeskRep 76%0.057
5Cook PoliticalRep 75%0.062
6Sabato's Crystal BallRep 75%0.062

Polls (7)

PollsterDatenPollMiss
The New York Times/Siena College2018-11-02423R+4.81
Emerson College2018-10-31356R+9.36
Change Research2018-10-28631R+1.02
WPA Intelligence2018-10-23401R+18.015
WPA Intelligence2018-10-03400R+20.017
Emerson College2018-09-07240R+10.98
Expedition Strategies2018-09-07380R+6.03