The open TX-21 seat, vacated after incumbent Chip Roy pursued an unsuccessful attorney general bid, sits in a district with a Republican PVI of roughly R+10 and a consistent history of GOP victories. Mark Teixeira secured the Republican nomination in a crowded primary and benefits from substantial fundraising, Trump and Abbott endorsements, and alignment with district priorities on border security and spending. Kristin Hook, the Democratic nominee for a second cycle, raised far less and faces structural headwinds in the Hill Country and northern Bexar County areas. Election Day occurred November 3 with early returns showing a mixed count, yet trader consensus reflected in the current pricing continues to price in a decisive Republican outcome based on the district's partisan baseline and Teixeira's advantages.