Washington's 4th congressional district remains a solidly Republican seat, with Donald Trump carrying it by double digits in 2024 and a Partisan Voter Index around R+10. The August 4 top-two primary advanced Republican Amanda McKinney, a Yakima County commissioner backed by Trump and House leadership, alongside Democrat John Duresky, a retired Air Force major and first-time candidate. McKinney prevailed in a crowded GOP field that split conservative votes, while Duresky cleared a unified Democratic lane. Forecasters from Cook Political Report, Sabato's Crystal Ball, and others rate the November 3 general as safe or solid Republican, reflecting the district's consistent partisan lean and limited Democratic infrastructure. Low-probability shifts could stem from major scandals, health events, or an unexpected national Democratic surge, but the structural advantages favor the Republican nominee.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWA-04 House Election Winner
$51,004 Vol.
$51,004 Vol.
Republican Party
91%
Democratic Party
9%
$51,004 Vol.
$51,004 Vol.
Republican Party
91%
Democratic Party
9%
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Market Opened: Jan 28, 2026, 11:24 AM ET
Resolver
0x2F5e3684c...A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Resolver
0x2F5e3684c...Washington's 4th congressional district remains a solidly Republican seat, with Donald Trump carrying it by double digits in 2024 and a Partisan Voter Index around R+10. The August 4 top-two primary advanced Republican Amanda McKinney, a Yakima County commissioner backed by Trump and House leadership, alongside Democrat John Duresky, a retired Air Force major and first-time candidate. McKinney prevailed in a crowded GOP field that split conservative votes, while Duresky cleared a unified Democratic lane. Forecasters from Cook Political Report, Sabato's Crystal Ball, and others rate the November 3 general as safe or solid Republican, reflecting the district's consistent partisan lean and limited Democratic infrastructure. Low-probability shifts could stem from major scandals, health events, or an unexpected national Democratic surge, but the structural advantages favor the Republican nominee.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions