The open TX-21 seat, vacated by the incumbent pursuing higher office, sits in a district with an R+10 Partisan Voter Index and a history of double-digit Republican presidential margins, including Donald Trump's 11.5-point win in 2024. Redistricting further strengthened the map for Republicans ahead of the November 3 general election. Mark Teixeira secured the GOP nomination with a primary win exceeding 60 percent, bolstered by endorsements from President Trump and House leadership. Democrat Kristin Hook prevailed in her primary but faces a structurally disadvantaged contest in a district rated Solid or Safe Republican by Cook, Sabato's Crystal Ball, and Inside Elections. Trader consensus at 93.5 percent Republican reflects these fundamentals, though a national Democratic surge, nominee-specific developments, or turnout anomalies could narrow the gap.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedTX-21 House Election Winner
$64,099 Vol.
$64,099 Vol.
Republican Party
94%
Democratic Party
6%
$64,099 Vol.
$64,099 Vol.
Republican Party
94%
Democratic Party
6%
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, 11:24 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...The open TX-21 seat, vacated by the incumbent pursuing higher office, sits in a district with an R+10 Partisan Voter Index and a history of double-digit Republican presidential margins, including Donald Trump's 11.5-point win in 2024. Redistricting further strengthened the map for Republicans ahead of the November 3 general election. Mark Teixeira secured the GOP nomination with a primary win exceeding 60 percent, bolstered by endorsements from President Trump and House leadership. Democrat Kristin Hook prevailed in her primary but faces a structurally disadvantaged contest in a district rated Solid or Safe Republican by Cook, Sabato's Crystal Ball, and Inside Elections. Trader consensus at 93.5 percent Republican reflects these fundamentals, though a national Democratic surge, nominee-specific developments, or turnout anomalies could narrow the gap.
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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