Incumbent Democrat Marie Gluesenkamp Perez advanced from Washington’s August 4, 2026, top-two primary alongside Republican state Sen. John Braun to contest the November general election in the swing WA-03 district. Perez secured a narrow first-place finish with strong name recognition and a substantial fundraising advantage built over prior cycles, while Braun consolidated Republican support but trailed slightly in initial returns. Forecasters rate the race a toss-up or lean Democratic, citing the district’s R+6 partisan lean offset by Perez’s prior narrow victories and constituent-focused record. Trader consensus favoring the Democratic outcome reflects these structural and resource edges ahead of the general election campaign.
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
$33,202 Vol.
$33,202 Vol.
Democratic Party
87%
Republican Party
13%
$33,202 Vol.
$33,202 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 Washington’s August 4, 2026, top-two primary alongside Republican state Sen. John Braun to contest the November general election in the swing WA-03 district. Perez secured a narrow first-place finish with strong name recognition and a substantial fundraising advantage built over prior cycles, while Braun consolidated Republican support but trailed slightly in initial returns. Forecasters rate the race a toss-up or lean Democratic, citing the district’s R+6 partisan lean offset by Perez’s prior narrow victories and constituent-focused record. Trader consensus favoring the Democratic outcome reflects these structural and resource edges ahead of the general election campaign.
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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