Ken Paxton secured the Republican nomination for the Texas U.S. Senate seat after defeating four-term incumbent John Cornyn in the May 26 runoff primary. Trump’s endorsement one week before the contest consolidated support among the party base following a March primary in which neither candidate reached a majority. Paxton’s victory, projected at roughly 64 percent of the vote, reflects the influence of presidential backing in Republican primaries and the challenger’s alignment with core voter priorities on issues such as border security and federal spending. Other listed candidates, including Dawn Buckingham, Beth Van Duyne, and Wesley Hunt, received negligible support and did not advance. While the market prices indicate near-certainty of resolution in Paxton’s favor, late-stage certification disputes or procedural challenges remain theoretically possible though historically rare in Texas primaries.