VotePredictor
past elections

Kansas Senate

Barbara Goolsbee Bollier (D) vs Roger Marshall (R)

Actual result
R+11.4
Final polls said
R+4.1
6 late polls · ✓
Model predicted
R+7.0
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
1co/efficientR+12.00.6
2CiviqsR+7.04.4
3VotePredictorR+7.04.5
4Data for ProgressR+6.05.4
5The New York Times/Siena CollegeR+4.07.4
6VCreek/AMGR+3.67.9
7Public Policy PollingEVEN11.4
8GBAOD+1.012.4

Forecasters — pre-election win probability, scored by Brier

#ForecasterWin probBrierCalled
1Elections DailyRep 90%0.010
2JHK ForecastsRep 86%0.020
3VotePredictorRep 86%0.021
4Princeton Election ConsortiumRep 84%0.026
5The EconomistRep 83%0.029
6FiveThirtyEightRep 80%0.040
7Cook PoliticalRep 75%0.062
8RealClearPoliticsRep 75%0.062
9Sabato's Crystal BallRep 75%0.062
10Race to the WHRep 70%0.090
11DDHQ/Decision DeskRep 67%0.109
12CNalysisRep 60%0.160
13Inside ElectionsRep 60%0.160

Polls (11)

PollsterDatenPollMiss
Data for Progress2020-10-291121R+6.05
GBAO2020-10-26600D+1.012
VCreek/AMG2020-10-261149R+3.68
Public Policy Polling2020-10-19897EVEN11
co/efficient2020-10-192453R+12.01
The New York Times/Siena College2020-10-19755R+4.07
VCreek/AMG2020-09-293104D+3.515
Civiqs2020-09-28677R+7.04
GBAO2020-09-26600D+2.013
Data for Progress2020-09-16883EVEN11
co/efficient2020-09-15794R+4.07