Texas's 21st congressional district maintains a strong Republican tilt rooted in its exurban and Hill Country demographics, with the party holding the seat since 1978 and securing consistent victories exceeding 20 points in recent general elections. Incumbent Chip Roy's decision to seek the Texas attorney general post created an open race, yet the March 2026 Republican primary delivered a decisive win for nominee Mark Teixeira, clearing the field early without a runoff. Forecasters rate the contest Solid or Safe Republican based on voting patterns and limited Democratic infrastructure. The Democratic nominee faces structural barriers in a district where Republican candidates have dominated turnout and fundraising, with no significant shifts in registration or polling reported in the past month to alter that trajectory ahead of the November general election.
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
$35,509 Vol.
$35,509 Vol.
Republican Party
78%
Democratic Party
19%
$35,509 Vol.
$35,509 Vol.
Republican Party
78%
Democratic Party
19%
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...Texas's 21st congressional district maintains a strong Republican tilt rooted in its exurban and Hill Country demographics, with the party holding the seat since 1978 and securing consistent victories exceeding 20 points in recent general elections. Incumbent Chip Roy's decision to seek the Texas attorney general post created an open race, yet the March 2026 Republican primary delivered a decisive win for nominee Mark Teixeira, clearing the field early without a runoff. Forecasters rate the contest Solid or Safe Republican based on voting patterns and limited Democratic infrastructure. The Democratic nominee faces structural barriers in a district where Republican candidates have dominated turnout and fundraising, with no significant shifts in registration or polling reported in the past month to alter that trajectory ahead of the November general election.
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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