Sen. John Cornyn’s landslide defeat Tuesday immediately raised a pressing question for his GOP colleagues: Will he join the ranks of other Republicans recently vanquished by President Donald Trump and begin bucking the president more?

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

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…

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

Cornyn touted his long record of supporting Trump’s agenda during the campaign. But it wasn’t enough, as the president never forgot his past criticisms.

U.S. Sen. John Cornyn tried for more than a year to show Donald Trump and Texas Republicans that he and the president were on the same team.

Sen. John Cornyn’s landslide defeat Tuesday immediately raised a pressing question for his GOP colleagues: Will he join the ranks of other Republicans recently vanquished by…

Sen. John Cornyn is just the latest high-profile Republican incumbent to learn that in today’s GOP, conservative credentials are no match for Trump’s grip on the party.

“John Cornyn is a good man, and I worked well with him, but he was not supportive of me when times were tough,” Trump wrote on social media.