Incumbent Democrat Jim Costa’s strong performance in the June 2 primary, where he secured roughly 41.5 percent of the vote to advance alongside Republican Kyle Kirkland, reinforces the district’s established Democratic lean. California’s 21st, covering parts of the Central Valley, carries a partisan voting index favoring Democrats by several points and delivered Costa a 52.6 percent general-election victory in 2024. With no major shifts in voter registration or polling since then, trader consensus reflects the structural advantages of incumbency, fundraising, and district composition heading into the November general election.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jourVainqueur de l'élection à la Chambre CA-21
Parti démocrate
89%
Parti républicain
12%
Parti démocrate
89%
Parti républicain
12%
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/).
Marché ouvert : 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 Democrat Jim Costa’s strong performance in the June 2 primary, where he secured roughly 41.5 percent of the vote to advance alongside Republican Kyle Kirkland, reinforces the district’s established Democratic lean. California’s 21st, covering parts of the Central Valley, carries a partisan voting index favoring Democrats by several points and delivered Costa a 52.6 percent general-election victory in 2024. With no major shifts in voter registration or polling since then, trader consensus reflects the structural advantages of incumbency, fundraising, and district composition heading into the November general election.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jour
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