California's 12th congressional district maintains a D+39 Partisan Voter Index, ranking among the nation's most Democratic seats and producing consistent double-digit margins for Democratic candidates in recent cycles. Incumbent Lateefah Simon secured the June 2026 top-two primary with over 84 percent, advancing alongside fellow Democrat Jamie Joyce after a Republican write-in received negligible support. All major forecasters rate the November general election as safe or solid Democratic, citing the district's Alameda County demographics, fundraising disparities, and absence of competitive Republican challengers. Trader consensus at 97.9 percent Democratic reflects these structural factors, though a major unforeseen scandal, candidate health event, or dramatic national realignment could theoretically alter the outcome before November 3.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedCA-12 House Election Winner
CA-12 House Election Winner
$44,263 Vol.
$44,263 Vol.
Nov 2, 2026
Democratic Party
98%
Republican Party
<1%
$44,263 Vol.
$44,263 Vol.
Nov 2, 2026
Democratic Party
$27,011 Vol.
98%
Republican Party
$17,251 Vol.
<1%
This market will resolve according to the party of the candidate who wins the CA-12 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/).California's 12th congressional district maintains a D+39 Partisan Voter Index, ranking among the nation's most Democratic seats and producing consistent double-digit margins for Democratic candidates in recent cycles. Incumbent Lateefah Simon secured the June 2026 top-two primary with over 84 percent, advancing alongside fellow Democrat Jamie Joyce after a Republican write-in received negligible support. All major forecasters rate the November general election as safe or solid Democratic, citing the district's Alameda County demographics, fundraising disparities, and absence of competitive Republican challengers. Trader consensus at 97.9 percent Democratic reflects these structural factors, though a major unforeseen scandal, candidate health event, or dramatic national realignment could theoretically alter the outcome before November 3.
This market will resolve according to the party of the candidate who wins the CA-12 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 27, 2026, 11:56 PM ET
Volume
$44,263End Date
Nov 3, 2026Market Opened
Jan 27, 2026, 11:56 PM ETResolver
0x2F5e3684c...This market will resolve according to the party of the candidate who wins the CA-12 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/).California's 12th congressional district maintains a D+39 Partisan Voter Index, ranking among the nation's most Democratic seats and producing consistent double-digit margins for Democratic candidates in recent cycles. Incumbent Lateefah Simon secured the June 2026 top-two primary with over 84 percent, advancing alongside fellow Democrat Jamie Joyce after a Republican write-in received negligible support. All major forecasters rate the November general election as safe or solid Democratic, citing the district's Alameda County demographics, fundraising disparities, and absence of competitive Republican challengers. Trader consensus at 97.9 percent Democratic reflects these structural factors, though a major unforeseen scandal, candidate health event, or dramatic national realignment could theoretically alter the outcome before November 3.
This market will resolve according to the party of the candidate who wins the CA-12 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
$44,263End Date
Nov 3, 2026Market Opened
Jan 27, 2026, 11:56 PM ETResolver
0x2F5e3684c...California's 12th congressional district maintains a D+39 Partisan Voter Index, ranking among the nation's most Democratic seats and producing consistent double-digit margins for Democratic candidates in recent cycles. Incumbent Lateefah Simon secured the June 2026 top-two primary with over 84 percent, advancing alongside fellow Democrat Jamie Joyce after a Republican write-in received negligible support. All major forecasters rate the November general election as safe or solid Democratic, citing the district's Alameda County demographics, fundraising disparities, and absence of competitive Republican challengers. Trader consensus at 97.9 percent Democratic reflects these structural factors, though a major unforeseen scandal, candidate health event, or dramatic national realignment could theoretically alter the outcome before November 3.
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