Mark Teixeira holds a commanding lead in the Texas 21st congressional district race due to the seat’s consistent Republican tilt, with a Cook PVI around R+10 and Donald Trump carrying the district by double digits in 2024. The open seat, vacated by Chip Roy, features a Republican primary winner who secured 60.9% of the vote and key endorsements, including from Trump, against Democrat Kristin Hook’s 60.1% primary performance in her rematch bid. Redistricting further strengthened the GOP position by adjusting boundaries toward San Antonio and the Hill Country. Forecasters rate the contest Solid Republican, projecting Teixeira near 60% of the general election vote on November 3. A shift would require an unforeseen event such as a major scandal or sharp national swing altering turnout patterns in this low-competition environment.