Montana State University Billings Mountain States Poll
Historical accuracy is measured against certified results. Current-cycle records come from the canonical, deduplicated archive and do not by themselves change the sealed forecast.
- Historical polls
- 11
- Mean absolute error
- 6.64percentage points
- Historical bias
- D+2.98
- Represented cycles
- 32000–2020
- Current archive
- 0canonical records
- History span
- Oct 21, 2000through Oct 22, 2020
Known names and relationships
- Known aliases
- No additional reviewed aliases
- Organization type
- Single canonical organization
- Cycles represented
- 2000 · 2008 · 2020
11 eligible historical polls across 3 represented cycles passed the published history identity checks. Historical bias is descriptive and is kept separate from sponsor or client affiliation.
Current-cycle records
Archive source date 2026-09-09 · bundled copy. Archive records may be newer than the sealed forecast; inclusion here does not mean the forecast uses them.
0 shown · 0 total
No record in the currently authorized canonical archive is attached to this identity.
This is not evidence that the pollster released no 2026 polling; the source-audit gaps remain documented.
Eligible historical observations
11 shown · 11 total
| Cycle | Race | Type | Field end | Sample | Poll | Result | Error |
|---|---|---|---|---|---|---|---|
| 2020 | 2020_Sen-G_MT | Sen-G | 2020-10-22 | 546 | D+1.0 | R+10.0 | D+11.0 |
| 2020 | 2020_Pres-G_MT | Pres-G | 2020-10-22 | 546 | R+7.0 | R+16.4 | D+9.4 |
| 2020 | 2020_House-G_MT-1 | House-G | 2020-10-22 | 546 | R+1.0 | R+12.8 | D+11.8 |
| 2020 | 2020_Gov-G_MT | Gov-G | 2020-10-22 | 546 | 0 | R+12.9 | D+12.9 |
| 2008 | 2008_Pres-G_MT | Pres-G | 2008-10-18 | 403 | D+4.0 | R+2.3 | D+6.3 |
| 2008 | 2008_House-G_MT-1 | House-G | 2008-10-18 | 403 | R+33.9 | R+31.7 | R+2.2 |
| 2008 | 2008_Gov-G_MT | Gov-G | 2008-10-18 | 403 | D+32.9 | D+33.0 | R+0.1 |
| 2000 | 2000_Sen-G_MT | Sen-G | 2000-10-21 | 403 | D+2.0 | R+3.3 | D+5.3 |
| 2000 | 2000_Pres-G_MT | Pres-G | 2000-10-21 | 403 | R+21.0 | R+25.1 | D+4.1 |
| 2000 | 2000_House-G_MT-1 | House-G | 2000-10-21 | 403 | R+2.0 | R+5.2 | D+3.2 |
| 2000 | 2000_Gov-G_MT | Gov-G | 2000-10-21 | 403 | D+3.0 | R+3.9 | D+6.9 |
Method · historical final-three-week D/R general-election rows plus verified historical supplement; min n=5
Definition · bias_D is poll D-R margin minus actual D-R margin; positive overstates Democrats.
A missing sample, sponsor or source is labeled unavailable; it is never reconstructed.
Poll data via VoteHub, used under CC BY 4.0. Poll data from The New York Times, used under CC BY 4.0.