VotePredictor
past elections

Maine Senate

Sara I. Gideon (D) vs Susan M. Collins (R)

Actual result
R+8.6
Final polls said
D+3.8
4 late polls · ✗
Model predicted
D+1.8
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
1Moore Information GroupEVEN8.6
2Digital ResearchD+1.09.6
3Emerson CollegeD+1.810.4
4VotePredictorD+1.810.4
5SurveyUSAD+2.010.6
6Colby CollegeD+3.211.8
7The New York Times/Siena CollegeD+5.013.6
8Suffolk UniversityD+7.015.6
9Pan Atlantic ResearchD+7.115.7
10Change ResearchD+8.016.6
11Data for ProgressD+8.016.6
12Citizen DataD+8.116.7
13Quinnipiac UniversityD+12.020.6

Forecasters — pre-election win probability, scored by Brier

#ForecasterWin probBrierCalled
1Cook PoliticalDem 50%0.250
2RealClearPoliticsDem 50%0.250
3FiveThirtyEightDem 59%0.348
4Inside ElectionsDem 60%0.360
5DDHQ/Decision DeskDem 65%0.423
6VotePredictorDem 66%0.430
7The EconomistDem 69%0.476
8JHK ForecastsDem 73%0.533
9CNalysisDem 75%0.562
10Elections DailyDem 75%0.562
11Sabato's Crystal BallDem 75%0.562
12Princeton Election ConsortiumDem 77%0.593
13Race to the WHDem 79%0.624

Polls (13)

PollsterDatenPollMiss
Change Research2020-10-311024D+8.017
Emerson College2020-10-30611D+1.810
SurveyUSA2020-10-251007D+2.011
Colby College2020-10-23879D+3.212
Pan Atlantic Research2020-10-04600D+7.116
Digital Research2020-09-29466D+1.010
Data for Progress2020-09-25718D+8.017
Moore Information Group2020-09-21500EVEN9
Colby College2020-09-20847D+4.013
Suffolk University2020-09-19500D+7.016
The New York Times/Siena College2020-09-13663D+5.014
Quinnipiac University2020-09-121183D+12.021
Citizen Data2020-09-06600D+8.117