Sen. John Cornyn’s uphill battle for renomination from his party reaches its conclusion Tuesday. Cornyn’s race against state Attorney General Ken Paxton was considered highly competitive until a week ago, when President Donald Trump abruptly backed Paxton and made him the front-runner for the nomination. Cornyn has refused to drop out and is still fighting through Tuesday, arguing a Paxton nomination puts Republicans at risk of losing his seat in November. Plus, there are several other notable races on Tuesday’s ballot to watch. At stake are the political futures of three Democratic members of the House as well as the direction of one of the most consequential statewide offices.

Paxton, the likely Republican nominee, is considered less likely to fare well against Democratic nominee in midterms.

Trump endorses Ken Paxton in Texas Senate runoff, attacks opponent, and pushes voter ID and election security agenda ahead of Tuesday vote.

Texas Republican Senate candidates Sen. John Cornyn and state Attorney General Ken Paxton are going to be scarcely visible in public on the last day of campaigning ahead of…

The vast majority of the $109 million in campaign ad spending is tilted toward John Cornyn.

Controversial Texas Attorney General Ken Paxton is challenging U.S. Sen. John Cornyn's reelection. The $100 million fight could have far-reaching implications for the GOP, and…

Texans are choosing a Republican nominee for U.S. Senate. The election brings to a close a bitter and expensive primary.

PLANO, Texas (AP) — Texans are choosing a Republican nominee for U.S. Senate in Tuesday’s runoff election, bringing to a close the extended, bitter and expensive primary where…

Texas Republican Senate candidates Sen. John Cornyn and state Attorney General Ken Paxton had no public campaign events on the last day before Tuesday's runoff.

Trump’s decision to back state Attorney General Ken Paxton against GOP Sen. John Cornyn jolted the Republican Senate primary in Texas.

Sen. John Cornyn’s uphill battle for renomination from his party reaches its conclusion Tuesday. Cornyn’s race against state Attorney General Ken Paxton was considered highly…

Trump endorsed Attorney General Ken Paxton over incumbent Sen. John Cornyn in the Texas Senate race.

A race to decide which Republican, John Cornyn or Ken Paxton, will face off against the Democrat James Talarico, in November, and both parties are picking candidates for House…

A race to decide whether John Cornyn or Ken Paxton will face off against the Democrat James Talarico, in November.

Sen. John Cornyn is facing off against Texas Attorney General Ken Paxton, who received President Trump's endorsement.

Vote for Republican nomination is latest test of President’s grip over GOP

Texas Sen. John Cornyn is facing Texas Attorney General Ken Paxton in today's GOP Senate runoff after neither candidate secured enough votes in the March primary to win the…

Texans are choosing a Republican nominee for U.S. Senate.

Texans are choosing a Republican nominee for U.S. Senate.

President Donald Trump's endorsements loom large over Tuesday's runoff elections in Texas with longtime Sen. John Cornyn facing Trump-pick Ken Paxton.

Texas Attorney General Ken Paxton has defeated four-term Sen. John Cornyn in a massively expensive, drawn-out U.S. Senate primary race