Incumbent Republican Brian Mast's dominant fundraising—$3.1 million raised and $2.55 million cash on hand as of late March—vastly outpaces leading Democratic primary contender Pia Dandiya's $1.57 million raised, reinforcing trader consensus at 85% for a GOP hold in the R+7-leaning FL-21. Recent mid-decade redistricting, signed into law by Gov. Ron DeSantis in early May, reworked 21 districts to favor Republicans statewide, preserving FL-21's Solid Republican rating from Cook Political Report and Sabato's Crystal Ball amid no public polling. A fragmented Democratic primary field of five candidates ahead of the August 18 primaries adds hurdles, though a unified nominee could test turnout in Martin, St. Lucie, and northern Palm Beach counties.
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
15%
Republican Party
85%
Democratic Party
15%
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 Brian Mast's dominant fundraising—$3.1 million raised and $2.55 million cash on hand as of late March—vastly outpaces leading Democratic primary contender Pia Dandiya's $1.57 million raised, reinforcing trader consensus at 85% for a GOP hold in the R+7-leaning FL-21. Recent mid-decade redistricting, signed into law by Gov. Ron DeSantis in early May, reworked 21 districts to favor Republicans statewide, preserving FL-21's Solid Republican rating from Cook Political Report and Sabato's Crystal Ball amid no public polling. A fragmented Democratic primary field of five candidates ahead of the August 18 primaries adds hurdles, though a unified nominee could test turnout in Martin, St. Lucie, and northern Palm Beach counties.
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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