VotePredictor
past elections

California President

Bernard Sanders (D) vs Joe Biden (R)

Actual result
D+29.2
Final polls said
D+31.3
5 late polls · ✓
Model predicted
D+31.1
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
1David Binder ResearchD+31.01.8
2VotePredictorD+31.11.9
3SurveyUSAD+27.02.2
4SwayableD+26.72.5
5SurveyMonkeyD+26.03.2
6Public Policy Institute of CaliforniaD+26.03.2
7Redfield & Wilton StrategiesD+34.04.8
8University of California Berkeley Institute of Governmental StudiesD+36.06.8
9University of Southern California Schwarzenegger Institute for State and Global PolicyD+37.07.8

Forecasters — pre-election win probability, scored by Brier

#ForecasterWin probBrierCalled
1CNalysisDem 99%0.000
2Cook PoliticalDem 99%0.000
3DDHQ/Decision DeskDem 100%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
11RealClearPoliticsDem 99%0.000
12Sabato's Crystal BallDem 99%0.000
13VotePredictorDem 100%0.000

Polls (11)

PollsterDatenPollMiss
David Binder Research2020-10-30800D+31.02
University of Southern California Schwarzenegger Institute for State and Global Policy2020-10-291155D+37.08
SurveyMonkey2020-10-2612370D+26.03
Swayable2020-10-25635D+26.72
University of California Berkeley Institute of Governmental Studies2020-10-185352D+36.07
Public Policy Institute of California2020-10-131185D+26.03
SurveyMonkey2020-10-0622797D+26.03
SurveyUSA2020-09-27558D+27.02
Redfield & Wilton Strategies2020-09-201885D+34.05
University of California Berkeley Institute of Governmental Studies2020-09-125942D+39.010
Public Policy Institute of California2020-09-081168D+29.00