Washington 1st District
Currently held by a Democrat · incumbent running
- Projected margin
- D+39.2
- 80% range
- D+27.7 to D+50.7
- Partisan lean
- D+30.5
- Uncertainty multiplier
- 1.80×
The 80% range comes from 200,000 simulations in which this race’s error is correlated with every other race through the national, state and demographic layers.
- Polling average
- no polls
- Fundamentals
- D+39.4
- Blended
- D+39.4
- Similar-race shift
- −2.8
No public polling of this matchup. The forecast rests on fundamentals plus the polling residuals of demographically and politically similar races — which is the normal case: most of the 435 House seats are never polled.
- Partisan lean
- D+30.5
- Elasticity
- 0.90
- Incumbency
- +3.4
- Candidate experience
- 0.0
- Fundraising
- +4.1
- National environment
- D+7.1
- Expected margin
- D+42.2
- 2024 margin
- D+29.7
- 2020 margin
- D+31.5
- Shift 2020 → 2024
- R+1.8
- Votes cast, 2024
- 374,405
Presidential results reaggregated onto the 2026 district lines. This is where the seat’s partisan lean comes from, and it carries most of the forecast in a race nobody has polled.
- Population
- 593,722
- Median age
- 45.3
- Median household income
- $126,600
- Bachelor’s degree or higher
- 50%
- White
- 63%
- Black
- 4%
- Hispanic
- 8%
- Asian
- 22%
Used to find demographically similar districts, so a race with no polling can borrow the polling error of races that look like it.
| Candidate | Party | Raised | Cash on hand |
|---|---|---|---|
| Suzan K Delbene | DEM | $3.6M | $1.1M |
| Mary Silva | REP | $8k | $1k |
Receipts across the cycle, from FEC bulk filings. The model uses the ratio between the two sides rather than either total, and weights it lightly — money follows a competitive race at least as much as it causes one.