DCCC Targeting and Analytics Department
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
- 8
- Mean absolute error
- 7.47percentage points
- Historical bias
- D+2.03
- Represented cycles
- 32016–2022
- Current archive
- 0canonical records
- History span
- Oct 20, 2016through Oct 31, 2022
Known names and relationships
- Known aliases
- No additional reviewed aliases
- Organization type
- Single canonical organization
- Cycles represented
- 2016 · 2020 · 2022
8 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
8 shown · 8 total
| Cycle | Race | Type | Field end | Sample | Poll | Result | Error |
|---|---|---|---|---|---|---|---|
| 2022 | 2022_House-G_PA-12 | House-G | 2022-10-31 | 785 | D+14.0 | D+12.4 | D+1.6 |
| 2022 | 2022_House-G_RI-2 | House-G | 2022-10-24 | 812 | 0 | D+3.7 | R+3.7 |
| 2022 | 2022_House-GS_NY-19 | House-G | 2022-08-07 | 480 | R+3.0 | D+2.9 | R+5.9 |
| 2020 | 2020_House-G_TX-3 | House-G | 2020-10-21 | 432 | D+2.0 | R+12.2 | D+14.2 |
| 2020 | 2020_House-G_WA-3 | House-G | 2020-10-20 | 425 | R+2.0 | R+13.0 | D+11.0 |
| 2020 | 2020_House-G_CO-3 | House-G | 2020-10-20 | 491 | D+1.0 | R+6.2 | D+7.2 |
| 2020 | 2020_House-GS_CA-25 | House-G | 2020-05-08 | 675 | D+2.0 | R+9.7 | D+11.7 |
| 2016 | 2016_House-G_UT-4 | House-G | 2016-10-20 | 478 | R+8.0 | R+12.4 | D+4.5 |
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.