Incumbent Democrat Marie Gluesenkamp Perez advanced from the August 2026 top-two primary to face Republican state Sen. John Braun in the November general election for Washington's 3rd congressional district. Perez's narrow 2022 and 2024 victories, combined with her moderate positioning and fundraising edge, underpin the strong trader consensus favoring a Democratic outcome in this R+5 to R+6 swing seat that Trump carried in 2024. Braun, backed by a Trump endorsement and consolidated Republican support, has kept the race competitive in early polling, yet the district's recent pattern of supporting the incumbent Democrat limits Republican upside. Forecasters rate the contest a toss-up or lean Democratic, with the November 3 general election still two months away.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWA-03 House Election Winner
$34,007 Vol.
$34,007 Vol.
Democratic Party
87%
Republican Party
13%
$34,007 Vol.
$34,007 Vol.
Democratic Party
87%
Republican Party
13%
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: Dec 16, 2025, 1:15 PM 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...Incumbent Democrat Marie Gluesenkamp Perez advanced from the August 2026 top-two primary to face Republican state Sen. John Braun in the November general election for Washington's 3rd congressional district. Perez's narrow 2022 and 2024 victories, combined with her moderate positioning and fundraising edge, underpin the strong trader consensus favoring a Democratic outcome in this R+5 to R+6 swing seat that Trump carried in 2024. Braun, backed by a Trump endorsement and consolidated Republican support, has kept the race competitive in early polling, yet the district's recent pattern of supporting the incumbent Democrat limits Republican upside. Forecasters rate the contest a toss-up or lean Democratic, with the November 3 general election still two months away.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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