Republican Sen. John Cornyn's uphill battle for renomination from his party reaches its conclusion Tuesday as voters head to the polls in the Texas primary runoffs.
President Donald Trump's endorsement of Texas Attorney General Ken Paxton last week shifted the race dramatically against Cornyn.
Several other contentious runoffs highlight deep divisions within both parties, including a Republican battle over the attorney general's office and Democratic primaries for three House seats.
AI-generated summary was reviewed by a CNN editor.
Republican Sen. John Cornyn’s uphill battle for renomination from his party reaches its conclusion Tuesday as voters head to the polls in the Texas primary runoffs.
