Incumbent Republican Rep. Brian Mast's April 29 launch of his re-election campaign for Florida's 21st Congressional District has solidified trader consensus at 84.5% for a GOP hold, reflecting the district's strong Republican lean under newly approved state redistricting maps expected to yield a 24-4 Republican advantage across Florida's delegation. Mast, a Purple Heart veteran leading the House Foreign Affairs Committee, benefits from incumbency and superior fundraising, while Democratic challengers like Pia Dandiya—who raised $410,000 in Q1—remain early-stage contenders ahead of the August 18 closed primaries. No recent polls exist, but historical base rates for such safely red districts favor incumbents, with trader odds implying low upset risk barring scandals or national midterm waves.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedFL-21 House Election Winner
FL-21 House Election Winner
Republican Party
85%
Democratic Party
16%
Republican Party
85%
Democratic Party
16%
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, 10:58 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 Republican Rep. Brian Mast's April 29 launch of his re-election campaign for Florida's 21st Congressional District has solidified trader consensus at 84.5% for a GOP hold, reflecting the district's strong Republican lean under newly approved state redistricting maps expected to yield a 24-4 Republican advantage across Florida's delegation. Mast, a Purple Heart veteran leading the House Foreign Affairs Committee, benefits from incumbency and superior fundraising, while Democratic challengers like Pia Dandiya—who raised $410,000 in Q1—remain early-stage contenders ahead of the August 18 closed primaries. No recent polls exist, but historical base rates for such safely red districts favor incumbents, with trader odds implying low upset risk barring scandals or national midterm waves.
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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