Incumbent Democrat Jim Costa’s commanding position in the CA-21 race stems from his established record in the Central Valley district, where he secured renomination with a clear primary plurality over multiple challengers. The seat’s voter registration patterns and recent election margins favor Democratic candidates, producing trader consensus reflected in the current pricing. With the general election set for November 2026 and Republican Kyle Kirkland advancing as the nominee, the race remains subject to shifts from national political conditions, turnout differences across Fresno, Tulare, and Kern counties, or late developments in campaign messaging and fundraising.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedCA-21 House Election Winner
CA-21 House Election Winner
$24,749 Vol.
$24,749 Vol.
Nov 3, 2026
Democratic Party
92%
Republican Party
9%
$24,749 Vol.
$24,749 Vol.
Nov 3, 2026
Democratic Party
$14,407 Vol.
92%
Republican Party
$10,342 Vol.
9%
This market will resolve according to the party of the candidate who wins the CA-21 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 2026.
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/).Incumbent Democrat Jim Costa’s commanding position in the CA-21 race stems from his established record in the Central Valley district, where he secured renomination with a clear primary plurality over multiple challengers. The seat’s voter registration patterns and recent election margins favor Democratic candidates, producing trader consensus reflected in the current pricing. With the general election set for November 2026 and Republican Kyle Kirkland advancing as the nominee, the race remains subject to shifts from national political conditions, turnout differences across Fresno, Tulare, and Kern counties, or late developments in campaign messaging and fundraising.
This market will resolve according to the party of the candidate who wins the CA-21 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 2026.
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/).
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, 12:08 AM ET
Volume
$24,749End Date
Nov 3, 2026Market Opened
Jan 28, 2026, 12:08 AM ETResolver
0x2F5e3684c...This market will resolve according to the party of the candidate who wins the CA-21 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 2026.
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/).Incumbent Democrat Jim Costa’s commanding position in the CA-21 race stems from his established record in the Central Valley district, where he secured renomination with a clear primary plurality over multiple challengers. The seat’s voter registration patterns and recent election margins favor Democratic candidates, producing trader consensus reflected in the current pricing. With the general election set for November 2026 and Republican Kyle Kirkland advancing as the nominee, the race remains subject to shifts from national political conditions, turnout differences across Fresno, Tulare, and Kern counties, or late developments in campaign messaging and fundraising.
This market will resolve according to the party of the candidate who wins the CA-21 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 2026.
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/).
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/).
Volume
$24,749End Date
Nov 3, 2026Market Opened
Jan 28, 2026, 12:08 AM ETResolver
0x2F5e3684c...Incumbent Democrat Jim Costa’s commanding position in the CA-21 race stems from his established record in the Central Valley district, where he secured renomination with a clear primary plurality over multiple challengers. The seat’s voter registration patterns and recent election margins favor Democratic candidates, producing trader consensus reflected in the current pricing. With the general election set for November 2026 and Republican Kyle Kirkland advancing as the nominee, the race remains subject to shifts from national political conditions, turnout differences across Fresno, Tulare, and Kern counties, or late developments in campaign messaging and fundraising.
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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