VotePredictor
past elections

Arizona House

Hiral Tipirneni (D) vs Debbie Lesko (R)

Actual result
R+4.7
Final polls said
R+3.3
3 late polls · ✓
Model predicted
R+8.4
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
1Lake Research PartnersR+4.00.7
2Emerson CollegeR+6.01.3
3VotePredictorR+8.43.7
4Noble Predictive InsightsR+10.05.3

Forecasters — pre-election win probability, scored by Brier

#ForecasterWin probBrierCalled
1The EconomistRep 98%0.001
2Cook PoliticalRep 90%0.010
3Sabato's Crystal BallRep 90%0.010
4FiveThirtyEightRep 87%0.017
5VotePredictorRep 76%0.059
6DDHQ/Decision DeskRep 69%0.099

Polls (5)

PollsterDatenPollMiss
Lake Research Partners2018-09-25400R+4.07
Emerson College2018-04-21400R+6.01
Lake Research Partners2018-04-15408EVEN5
Emerson College2018-04-14400D+1.06
Noble Predictive Insights2018-04-11500R+10.05