Incumbent Democrat Suzan DelBene advanced from Washington's August 2026 top-two primary with a clear majority, facing Republican Mary Silva in the November 3 general election for the U.S. House seat in WA-01. The district's strong Democratic lean, reflected in its partisan voting index and consistent performance in recent cycles, underpins trader consensus favoring the Democratic nominee at high probability. Cook Political Report maintains a Solid D rating, consistent with the area's suburban and urban voter base in the northern Seattle metro region. Potential shifts could stem from unexpected national economic or political developments, a major candidate-specific event, or unusually low turnout altering the established margin in this safely Democratic seat.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWA-01 House Election Winner
$44,548 Vol.
$44,548 Vol.
Democratic Party
95%
Republican Party
3%
$44,548 Vol.
$44,548 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 Suzan DelBene advanced from Washington's August 2026 top-two primary with a clear majority, facing Republican Mary Silva in the November 3 general election for the U.S. House seat in WA-01. The district's strong Democratic lean, reflected in its partisan voting index and consistent performance in recent cycles, underpins trader consensus favoring the Democratic nominee at high probability. Cook Political Report maintains a Solid D rating, consistent with the area's suburban and urban voter base in the northern Seattle metro region. Potential shifts could stem from unexpected national economic or political developments, a major candidate-specific event, or unusually low turnout altering the established margin in this safely Democratic seat.
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