WA-01 House 2026 · Hidden Levers

Race header

U.S. House, Washington District 1 · Incumbent running

DEMAdvanced to the general

Suzan DelBene incumbent

98%Hume Outlook · Hume model estimate · as of 2026-10-28

REPAdvanced to the general

Mary Silva

2%Hume Outlook · Hume model estimate · as of 2026-10-28

IncumbentSuzan DelBene

Hume Outlook

hume-2026.10-r1 · Forecast as of Oct 28, 2026

98% Suzan DelBene · DemocratChance to win, between the two named candidates

DEM Suzan DelBene 98%

REP Mary Silva 2%

Hume model estimate · built on polls, fundamentals, and markets

Latest poll Not available No public polls of this race in our data yet.

Seat lean (Hume PVI) D+13 as of cycle 2020

Prior result, this seat DEM 63.2% 2024 general · margin 26.3%

Side by side

2 candidates · 5 measures

FEC summary through 2026-10-14

MeasureDEMDelbeneREPSilva

Total receiptsUSD, cycle to date, all authorized committees

Suzan DelBene$4,281,272.38

Mary Silva$8,478.70

Total disbursementsUSD, cycle to date

Suzan DelBene$4,309,403.85

Mary Silva$7,435.97

Cash on handUSD, close of the covered period

Suzan DelBene$1,035,589.14

Mary Silva$1,298.86

Latest pollpercent, as stored

Suzan DelBeneNot available No public polls of this race in our data yet.

Mary SilvaNot available No public polls of this race in our data yet.

Seat lean (Hume PVI)identical for every candidate

Suzan DelBeneD+13seat-level

Mary SilvaD+13seat-level

Money is each candidate's FEC summary: every committee the candidate has authorized, combined, as filed through the coverage date shown.

Polling

0 listed · newest first

Not available No public polls of this race in our data yet.

Seat lean · Hume PVI

as of cycle 2020

D+13

Lean (D minus R, points): +13.314

Hume PVI is Hidden Levers' own two-party presidential-lean index for the district, computed on the district's current lines, not the Cook PVI.

Prior result, this seat

election returns

2024 general

Candidate	Party	Votes	% of total
Suzan DelBene	DEM	227,213	63.16%
Jeb Brewer	REP	132,538	36.84%

Total votes 359,751 · winning margin 26.32% of total (margin computed here from the cited vote counts)

Sources: FEC filings (through Oct 14, 2026) · Prior result: MIT Election Data + Science Lab (CC0) · Hume PVI and Hume Outlook: Hidden Levers estimates.

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