Democratic incumbent Adam Gray holds a strong position in California's 13th congressional district for the November 2026 general election, following his narrow 2024 flip of the seat and a favorable redistricting under Proposition 50 that added Democratic-leaning areas of Stockton. Gray advanced comfortably from the June 2026 top-two primary against Republican Kevin Lincoln, the former Stockton mayor and Marine veteran, who consolidated GOP support after other Republican candidates split the vote. Forecasters rate the race as safe or solid Democratic, reflecting the district's partisan lean, Gray's incumbency edge, and early fundraising patterns. Trader consensus on platforms like Polymarket assigns the Democratic Party an 89.5% implied probability of retaining the seat, with Republicans at 10.5%, driven by these structural advantages rather than recent polling shifts or campaign events.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedCA-13 House Election Winner
Democratic Party
90%
Republican Party
11%
Democratic Party
90%
Republican Party
11%
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: Dec 16, 2025, 11:45 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...Democratic incumbent Adam Gray holds a strong position in California's 13th congressional district for the November 2026 general election, following his narrow 2024 flip of the seat and a favorable redistricting under Proposition 50 that added Democratic-leaning areas of Stockton. Gray advanced comfortably from the June 2026 top-two primary against Republican Kevin Lincoln, the former Stockton mayor and Marine veteran, who consolidated GOP support after other Republican candidates split the vote. Forecasters rate the race as safe or solid Democratic, reflecting the district's partisan lean, Gray's incumbency edge, and early fundraising patterns. Trader consensus on platforms like Polymarket assigns the Democratic Party an 89.5% implied probability of retaining the seat, with Republicans at 10.5%, driven by these structural advantages rather than recent polling shifts or campaign events.
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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