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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
| # | Pollster | Final call | Miss | Called |
|---|---|---|---|---|
| 1 | Montana State University Bozeman Human Ecology Learning and Problem Solving Lab | D+3.1 | 0.4 | ✓ |
| 2 | Public Policy Polling | D+4.0 | 0.5 | ✓ |
| 3 | Gravis Marketing | D+3.0 | 0.5 | ✓ |
| 4 | YouGov | D+2.0 | 1.5 | ✓ |
| 5 | Trafalgar Group | D+1.1 | 2.4 | ✓ |
| 6 | Benenson Strategy Group/GS Strategy Group | D+7.0 | 3.5 | ✓ |
| 7 | Axis Research | EVEN | 3.5 | ✗ |
| 8 | Harris Insights & Analytics | D+7.8 | 4.3 | ✓ |
| 9 | Montana State University Billings | D+9.0 | 5.5 | ✓ |
| 10 | Change Research | R+3.0 | 6.5 | ✗ |
| 11 | University of Montana Social Science Research Laboratory | D+10.1 | 6.5 | ✓ |
Forecasters — pre-election win probability, scored by Brier
| # | Forecaster | Win prob | Brier | Called |
|---|---|---|---|---|
| 1 | VotePredictor Elections | Dem 79% | 0.045 | ✓ |
| 2 | FiveThirtyEight | Dem 76% | 0.058 | ✓ |
| 3 | Sabato's Crystal Ball | Dem 75% | 0.062 | ✓ |
| 4 | DDHQ/Decision Desk | Dem 74% | 0.065 | ✓ |
| 5 | JHK Forecasts | Dem 74% | 0.068 | ✓ |
| 6 | Inside Elections | Dem 60% | 0.160 | ✓ |
| 7 | Cook Political | Dem 50% | 0.250 | — |
The polls behind it
14 polls · newest firstPollsterDateSampleMiss
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.