University of Washington Center for Survey Research
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
- 9
- Mean absolute error
- 3.62percentage points
- Historical bias
- D+0.12
- Represented cycles
- 42006–2012
- Current archive
- 0canonical records
- History span
- Oct 28, 2006through Oct 25, 2012
Known names and relationships
- Known aliases
- No additional reviewed aliases
- Organization type
- Single canonical organization
- Cycles represented
- 2006 · 2008 · 2010 · 2012
9 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
9 shown · 9 total
| Cycle | Race | Type | Field end | Sample | Poll | Result | Error |
|---|---|---|---|---|---|---|---|
| 2012 | 2012_Sen-G_WA | Sen-G | 2012-10-25 | 632 | D+27.5 | D+20.9 | D+6.6 |
| 2012 | 2012_Pres-G_WA | Pres-G | 2012-10-25 | 632 | D+20.7 | D+14.9 | D+5.8 |
| 2012 | 2012_Gov-G_WA | Gov-G | 2012-10-25 | 632 | D+3.1 | D+3.1 | D+0.0 |
| 2010 | 2010_Sen-G_WA | Sen-G | 2010-10-23 | 695 | D+6.0 | D+4.7 | D+1.3 |
| 2008 | 2008_Pres-G_WA | Pres-G | 2008-10-29 | 400 | D+12.0 | D+17.2 | R+5.2 |
| 2008 | 2008_Gov-G_WA | Gov-G | 2008-10-29 | 387 | D+2.0 | D+6.5 | R+4.5 |
| 2008 | 2008_Pres-G_WA | Pres-G | 2008-10-22 | 600 | D+21.0 | D+17.2 | D+3.8 |
| 2008 | 2008_Gov-G_WA | Gov-G | 2008-10-22 | 600 | D+6.0 | D+6.5 | R+0.5 |
| 2006 | 2006_Sen-G_WA | Sen-G | 2006-10-28 | 700 | D+12.0 | D+16.9 | R+4.9 |
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.