VotePredictor
past elections

Arkansas Senate

Ricky Dale Harrington Jr. (D) vs Tom Cotton (R)

Actual result
D+33.1
Final polls said
D+55.0
1 late poll · ✓
Model predicted
D+40.6
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
1Hendrix CollegeD+35.01.9
2VotePredictorD+40.67.5
3University of Arkansas Department of Political ScienceD+55.021.9
4American Research GroupD+11.022.1

Forecasters — pre-election win probability, scored by Brier

#ForecasterWin probBrierCalled
1VotePredictorDem 100%0.000
2CNalysisRep 99%0.980
3Cook PoliticalRep 99%0.980
4Elections DailyRep 99%0.980
5Inside ElectionsRep 99%0.980
6RealClearPoliticsRep 99%0.980
7Sabato's Crystal BallRep 99%0.980
8DDHQ/Decision DeskRep 100%1.000
9The EconomistRep 100%1.000
10FiveThirtyEightRep 100%1.000
11JHK ForecastsRep 100%1.000
12Princeton Election ConsortiumRep 100%1.000
13Race to the WHRep 100%1.000

Polls (3)

PollsterDatenPollMiss
University of Arkansas Department of Political Science2020-10-15591D+55.022
Hendrix College2020-10-12647D+35.02
American Research Group2020-10-08600D+11.022