Incumbent Democrat Adam Smith advanced from Washington's August 4, 2026 top-two primary in the 9th district alongside Republican Doug Basler, securing roughly half the vote in a contest where the district's D+22 Partisan Voter Index and consistent 60-plus point Democratic margins in recent cycles already shaped expectations. Cook Political Report and other nonpartisan analysts rate the seat Solid Democratic ahead of the November 3 general election. Traders have priced in the structural advantages of incumbency, voter registration patterns in southern Seattle suburbs, and limited Republican infrastructure, producing the current 94.5 percent implied probability for a Democratic victory. A sustained national Republican wave, major personal scandal, or health-related withdrawal by Smith represent the primary low-probability paths that could reopen the race 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-09 House Election Winner
$49,460 Vol.
$49,460 Vol.
Democratic Party
95%
Republican Party
3%
$49,460 Vol.
$49,460 Vol.
Democratic Party
95%
Republican Party
3%
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...Incumbent Democrat Adam Smith advanced from Washington's August 4, 2026 top-two primary in the 9th district alongside Republican Doug Basler, securing roughly half the vote in a contest where the district's D+22 Partisan Voter Index and consistent 60-plus point Democratic margins in recent cycles already shaped expectations. Cook Political Report and other nonpartisan analysts rate the seat Solid Democratic ahead of the November 3 general election. Traders have priced in the structural advantages of incumbency, voter registration patterns in southern Seattle suburbs, and limited Republican infrastructure, producing the current 94.5 percent implied probability for a Democratic victory. A sustained national Republican wave, major personal scandal, or health-related withdrawal by Smith represent the primary low-probability paths that could reopen the race 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

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