Live updates: Multiple key races called for primary election runoffs, AP projects

The Associated Press projected that Christian Menefee has won the District 18 Congressional seat, defeating longtime Congressman Al Green in a race shaped by redistricting and defined by age and experience.

Those who live in District 18 have cast votes for their representative four times in less than a year, with previous representatives including Sheila Jackson Lee and former Houston mayor Sylvester Turner.

The new congressional lines drastically changed Green's longtime 9th Congressional District, drawing his home into a brand new 18th district.

SEE FULL REPORT: Menefee wins Democratic primary for 18th House District in Texas, beats Green, AP projects

The Associated Press has projected that Mayes Middleton will win the Republican nomination for Texas Attorney General, defeating his opponent, Chip Roy.

For the Democrats, the Associated Press has projected that Nathan Johnson will be the party's nominee for Texas Attorney General, defeating Joe Jaworski.

After the Associated Press projected that Texas Attorney General Ken Paxton would win the Republican nomination for U.S. Senate, the GOP candidate spoke to supporters in Plano.

"We went up against $150 million and all the attacks in the world, and we proved that Texas is not for sale," Paxton said. "Change was on the ballot, and change won."

Incumbent Sen. John Cornyn also spoke to his supporters in Austin following his projected defeat.

We've come up short in this primary runoff," Cornyn said. "Over the next 7 months, I intend to continue my work to make this nation a better place for all Texans and all Americans."

SEE FULL REPORT: Ken Paxton wins GOP runoff for US Senate, ousting John Cornyn, AP projects

With 49% of the expected vote in, the Associated Press has projected that Texas Attorney General Ken Paxton will win the Republican nomination for U.S. Senate, defeating four-term incumbent Sen. John Cornyn.

This projected victory comes after Paxton was endorsed by President Donald Trump.

Based on the projection, Paxton will run against state Rep. James Talarico in the November general election.