Incumbent Democratic Rep. Marie Gluesenkamp Perez advanced from Washington’s August 4 top-two primary alongside Republican state Senate Minority Leader John Braun to contest the November 3 general election in the competitive WA-03 district. The seat carries a Cook Partisan Voting Index of R+2 and supported Donald Trump in 2024, yet Perez secured reelection in the prior cycle with 51.7% of the vote through moderate positioning and bipartisan legislative work that appeals to swing voters in the Vancouver-centered area. Braun, endorsed by Trump, brings institutional Republican support and fundraising capacity, but the race remains one of roughly 18 national toss-ups where early general-election polling has shown the candidates nearly tied. Trader consensus reflected in the current pricing appears driven by Perez’s incumbency edge, name recognition, and the district’s gradual leftward movement in recent cycles, though the narrow primary margins and ongoing campaign dynamics leave room for shifts before Election Day.
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
$27,127 Vol.
$27,127 Vol.
Democratic Party
88%
Republican Party
11%
$27,127 Vol.
$27,127 Vol.
Democratic Party
88%
Republican Party
11%
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 Democratic Rep. Marie Gluesenkamp Perez advanced from Washington’s August 4 top-two primary alongside Republican state Senate Minority Leader John Braun to contest the November 3 general election in the competitive WA-03 district. The seat carries a Cook Partisan Voting Index of R+2 and supported Donald Trump in 2024, yet Perez secured reelection in the prior cycle with 51.7% of the vote through moderate positioning and bipartisan legislative work that appeals to swing voters in the Vancouver-centered area. Braun, endorsed by Trump, brings institutional Republican support and fundraising capacity, but the race remains one of roughly 18 national toss-ups where early general-election polling has shown the candidates nearly tied. Trader consensus reflected in the current pricing appears driven by Perez’s incumbency edge, name recognition, and the district’s gradual leftward movement in recent cycles, though the narrow primary margins and ongoing campaign dynamics leave room for shifts before Election Day.
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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