John Cornyn

Paxton, the Trump-endorsed Texas attorney general, will face Austin state Rep. James Talarico, the Democratic nominee for Senate, in November's general election.

John Cornyn is trying to fend off Ken Paxton. Both parties are picking attorney general nominees. And an oil and gas regulatory race has become uncharacteristically costly.

Tarrant, Collin, and Denton counties also saw more Republicans turn out. The race between Texas AG Ken Paxton and Sen. John Cornyn may be a significant factor.

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 party control of the Senate.

Sen. John Cornyn used a San Antonio campaign stop to warn Republicans that Ken Paxton could put the party's Senate seat at risk as the high-stakes runoff enters its final days.

The Republican president had repeatedly teased his intention to endorse a candidate in the race, starting soon after Ken Paxton and John Cornyn emerged as the remaining contenders from the first round of primary voting in March.

The Republican primary battle between incumbent Sen. John Cornyn and Texas Attorney General Ken Paxton, which has raged for more than a year, will come to its conclusion on May 26.

The incumbent senator and his allies have massively outspent the pro-Paxton side, though polling points to a tight finish in the May 26 election.

The Austin Democrat, who won his party’s nomination in March, led Cornyn and Paxton by margins of 3 and 5 percentage points, respectively. Both results were within the survey’s margin of error.

The new poll, conducted on behalf of Texas Public Opinion Research, shows that even an endorsement by President Donald Trump would not help Cornyn enough to close the gap with Paxton.

Both Republican candidates lagged far behind Democratic candidate James Talarico.

The president could still weigh in over the next seven weeks. But his inaction before last month’s dropout deadline has only hardened the rivalry.