Texas’s 21st congressional district carries a Cook Partisan Voter Index of R+10 and has supported Republican presidential candidates by double-digit margins in recent cycles, including a 21.8-point advantage in 2024. The seat opened after incumbent Chip Roy declined to seek re-election. Republican nominee Mark Teixeira, a former MLB player, captured 60.9 percent in the March primary, secured major endorsements, and raised over $4 million compared with Democrat Kristin Hook’s roughly $370,000. Forecasters rate the race Solid or Safe Republican with projected margins around R+15 and no public polling showing movement. Trader consensus at 98.7 percent for Teixeira reflects these structural and resource advantages. A late scandal, health issue, or turnout surprise could still alter the result before November 3.