JMC Analytics/Bold Blue Campaigns
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
- 5
- Mean absolute error
- 6.71percentage points
- Historical bias
- R+1.63
- Represented cycles
- 12018
- Current archive
- 0canonical records
- History span
- Oct 16, 2018through Nov 22, 2018
Known names and relationships
- Known aliases
- No additional reviewed aliases
- Participating organizations
- JMC Analytics · Bold Blue Campaigns
- Cycles represented
- 2018
5 eligible historical polls is a limited denominator; both MAE and bias may move materially as another cycle is added.
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
5 shown · 5 total
| Cycle | Race | Type | Field end | Sample | Poll | Result | Error |
|---|---|---|---|---|---|---|---|
| 2018 | 2018_Sen-GSR_MS | Sen-G | 2018-11-22 | 684 | R+10.0 | R+7.3 | R+2.7 |
| 2018 | 2018_House-G_WI-6 | House-G | 2018-11-01 | 500 | R+28.0 | R+11.0 | R+17.0 |
| 2018 | 2018_House-G_CO-3 | House-G | 2018-10-30 | 500 | R+5.0 | R+8.0 | D+3.0 |
| 2018 | 2018_House-G_GA-7 | House-G | 2018-10-16 | 500 | R+6.0 | R+0.1 | R+5.8 |
| 2018 | 2018_House-G_GA-6 | House-G | 2018-10-16 | 500 | R+4.0 | D+1.0 | R+5.0 |
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.