VotePredictor
past elections

Illinois President

Joe Biden (D) vs Donald Trump (R)

Actual result
D+17.0
Final polls said
D+14.7
5 late polls · ✓
Model predicted
D+15.3
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
1Research Co.D+17.00.0
2SurveyMonkeyD+18.01.0
3Victory ResearchD+15.91.1
4VotePredictorD+15.31.7
5SwayableD+11.55.5

Forecasters — pre-election win probability, scored by Brier

#ForecasterWin probBrierCalled
1CNalysisDem 99%0.000
2Cook PoliticalDem 99%0.000
3DDHQ/Decision DeskDem 98%0.000
4The EconomistDem 100%0.000
5Elections DailyDem 99%0.000
6FiveThirtyEightDem 100%0.000
7Inside ElectionsDem 99%0.000
8JHK ForecastsDem 100%0.000
9Princeton Election ConsortiumDem 100%0.000
10Race to the WHDem 100%0.000
11Sabato's Crystal BallDem 99%0.000
12VotePredictorDem 100%0.000
13RealClearPoliticsDem 90%0.010

Polls (7)

PollsterDatenPollMiss
Research Co.2020-10-31450D+17.00
Swayable2020-10-29485D+11.55
Victory Research2020-10-291208D+15.91
SurveyMonkey2020-10-265643D+18.01
Swayable2020-10-25424D+11.16
SurveyMonkey2020-10-067410D+19.02
Victory Research2020-09-251208D+13.14