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Toss-up · 2018 Senate

Montana Senate

In the 2018 Montana Senate race, Jon Tester (D) won by about 4 points.

Actual result
D+3.5
Final polls said
D+3.8
6 late polls · ✓
VotePredictor Elections predicted
—
Winner
Dem

"Final polls" = the last ~3 weeks; the prediction is walk-forward. How this is scored →

Final rankings

How everyone who called this race did, ranked — VotePredictor Elections shown inline (★).

Pollsters — each pollster's final poll vs the result

#PollsterFinal callMissCalled
1Montana State University Bozeman Human Ecology Learning and Problem Solving LabD+3.10.4✓
2Public Policy PollingD+4.00.5✓
3Gravis MarketingD+3.00.5✓
4YouGovD+2.01.5✓
5Trafalgar GroupD+1.12.4✓
6Benenson Strategy Group/GS Strategy GroupD+7.03.5✓
7Axis ResearchEVEN3.5✗
8Harris Insights & AnalyticsD+7.84.3✓
9Montana State University BillingsD+9.05.5✓
10Change ResearchR+3.06.5✗
11University of Montana Social Science Research LaboratoryD+10.16.5✓

Forecasters — pre-election win probability, scored by Brier

#ForecasterWin probBrierCalled
1VotePredictor ElectionsDem 79%0.045✓
2FiveThirtyEightDem 76%0.058✓
3Sabato's Crystal BallDem 75%0.062✓
4DDHQ/Decision DeskDem 74%0.065✓
5JHK ForecastsDem 74%0.068✓
6Inside ElectionsDem 60%0.160✓
7Cook PoliticalDem 50%0.250—

The polls behind it

14 polls · newest first
PollsterDateMiss
Trafalgar Group2018-11-042
Harris Insights & Analytics2018-11-034
Change Research2018-11-037
Harris Insights & Analytics2018-10-293
Harris Insights & Analytics2018-10-283

Frequently asked questions

Who won the 2018 Montana Senate race?

Jon Tester (D) won, by about 3.5 points (D+3.5).

When was the 2018 Montana Senate election held?

It was held in November 2018.

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