Incumbent Jim Costa holds a commanding position in California's 21st congressional district heading into the November 3, 2026 general election, as reflected in trader consensus. The district carries a D+5 partisan voter index, and nonpartisan forecasters rate the race Likely Democratic. Costa advanced from the June 2 top-two primary with roughly 42 percent of the vote against Republican Kyle Kirkland at 26 percent. Costa's substantial fundraising advantage, exceeding $1 million compared with Kirkland's under $350,000, supports his established voter base and name recognition in the Central Valley. A Republican upset would require a significant late shift in turnout or national conditions capable of overcoming the district's structural lean and the incumbent's resource edge.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-updateCA-21 House Election Winner
$27,144 Vol.
$27,144 Vol.
Jim Costa (D)
93%
Kyle Kirkland (R)
7%
$27,144 Vol.
$27,144 Vol.
Jim Costa (D)
93%
Kyle Kirkland (R)
7%
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/).
Binuksan ang Market: Jan 28, 2026, 12:08 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 Jim Costa holds a commanding position in California's 21st congressional district heading into the November 3, 2026 general election, as reflected in trader consensus. The district carries a D+5 partisan voter index, and nonpartisan forecasters rate the race Likely Democratic. Costa advanced from the June 2 top-two primary with roughly 42 percent of the vote against Republican Kyle Kirkland at 26 percent. Costa's substantial fundraising advantage, exceeding $1 million compared with Kirkland's under $350,000, supports his established voter base and name recognition in the Central Valley. A Republican upset would require a significant late shift in turnout or national conditions capable of overcoming the district's structural lean and the incumbent's resource edge.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-update

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