Democratic incumbent Jim Costa's strong primary performance, advancing alongside Republican Kyle Kirkland to the November general election, anchors trader consensus favoring the Democratic Party in California's 21st congressional district. The Central Valley seat, spanning parts of Fresno, Tulare, Kings, and Kern counties, features a Democratic voter registration edge and has drawn consistent Likely Democratic or Safe Democratic ratings from forecasters like the Cook Political Report and Sabato's Crystal Ball. Limited post-primary developments, including stable polling trends and the district's partisan lean, have reinforced the wide gap in implied probabilities, with few scheduled events expected to alter the trajectory before November.
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
$23,179 Vol.
$23,179 Vol.
Nov 3, 2026
Democratic Party
90%
Republican Party
9%
$23,179 Vol.
$23,179 Vol.
Nov 3, 2026
Democratic Party
$13,393 Vol.
90%
Republican Party
$9,786 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/).Democratic incumbent Jim Costa's strong primary performance, advancing alongside Republican Kyle Kirkland to the November general election, anchors trader consensus favoring the Democratic Party in California's 21st congressional district. The Central Valley seat, spanning parts of Fresno, Tulare, Kings, and Kern counties, features a Democratic voter registration edge and has drawn consistent Likely Democratic or Safe Democratic ratings from forecasters like the Cook Political Report and Sabato's Crystal Ball. Limited post-primary developments, including stable polling trends and the district's partisan lean, have reinforced the wide gap in implied probabilities, with few scheduled events expected to alter the trajectory before November.
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
$23,179End 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/).Democratic incumbent Jim Costa's strong primary performance, advancing alongside Republican Kyle Kirkland to the November general election, anchors trader consensus favoring the Democratic Party in California's 21st congressional district. The Central Valley seat, spanning parts of Fresno, Tulare, Kings, and Kern counties, features a Democratic voter registration edge and has drawn consistent Likely Democratic or Safe Democratic ratings from forecasters like the Cook Political Report and Sabato's Crystal Ball. Limited post-primary developments, including stable polling trends and the district's partisan lean, have reinforced the wide gap in implied probabilities, with few scheduled events expected to alter the trajectory before November.
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
$23,179End Date
Nov 3, 2026Market Opened
Jan 28, 2026, 12:08 AM ETResolver
0x2F5e3684c...Democratic incumbent Jim Costa's strong primary performance, advancing alongside Republican Kyle Kirkland to the November general election, anchors trader consensus favoring the Democratic Party in California's 21st congressional district. The Central Valley seat, spanning parts of Fresno, Tulare, Kings, and Kern counties, features a Democratic voter registration edge and has drawn consistent Likely Democratic or Safe Democratic ratings from forecasters like the Cook Political Report and Sabato's Crystal Ball. Limited post-primary developments, including stable polling trends and the district's partisan lean, have reinforced the wide gap in implied probabilities, with few scheduled events expected to alter the trajectory before November.
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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