Democratic and Republican primary candidates whose races were too close to call in March are vying for voter approval Tuesday ...

A fiercely contested primary between Senator John Cornyn and Ken Paxton, the Texas attorney general, was upended in mid-May, ...

Jimmy Carter and Barack Obama both won the Iowa caucuses before winning the White House. Bill Clinton and Joe Biden did not ...

After months of mudslinging, several Republicans are bracing for a messy primary finish — and an even more costly general ...

Ken Paxton, the Texas attorney general, defeated John Cornyn, a four-term Republican senator, in a runoff that confirmed the ...

President Donald Trump insists a peace deal is close on the 88th day of the Iran war. But on Tuesday Iran denounced U.S.

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

Top Arizona Republicans were silent after an Arizona Republic investigation of allegations of former Sheriff Mark Lamb's ...

The Democratic candidates for Iowa's U.S. Senate campaigned in the Des Moines area Saturday leading up to the June 2 primary.

A long, costly primary ends Tuesday as Cornyn fights Paxton after Trump’s endorsement. See what’s at stake in the runoff.

NBC News projects Menefee defeated Green after GOP-led redistricting efforts forced them to run for the same slice of Houston ...

Trump-backed Paxton beat Cornyn, making him the first Texas Republican senator to lose renomination.