Texas Attorney General Ken Paxton (R-TX) defeated incumbent Senator John Cornyn (R-TX) in the Republican primary runoff election on May 26, 2026 [1].
The victory represents a significant shift in the Texas GOP, as a challenger successfully ousted a long-term incumbent in a primary battle. The result signals the continued influence of the party's most populist wing on state and federal nominations.
According to the CNN Decision Desk, Paxton was projected to win the seat in the runoff [2]. The outcome follows a surge in voter enthusiasm and strong support from former President Donald Trump, which contributed to Paxton's momentum in the days leading up to the vote [3, 4].
Cornyn responded to the defeat by addressing his history with the Attorney General. "I stand by my past criticisms of Ken Paxton," Cornyn said [2].
Observers of the race noted the scale of the victory. Jeff Charles of Townhall said Paxton "annihilated" Cornyn in the runoff election [5]. The win secures the Republican nomination for the U.S. Senate seat, moving Paxton toward the general election.
The primary runoff took place across Texas on May 26, 2026 [1]. This outcome concludes a contentious internal party struggle that pitted an established legislative veteran against a high-profile state official known for his legal battles and alignment with the Trump wing of the party.
“"I stand by my past criticisms of Ken Paxton."”
Paxton's victory underscores the volatility of incumbent status within the current Republican primary ecosystem. By defeating Cornyn, Paxton demonstrates that alignment with Donald Trump and a populist platform can outweigh the traditional advantages of seniority and legislative experience in Texas.
