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

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.

Harris County Clerk Teneshia Hudspeth has called this primary runoff election day a successful one for the county.

Hudpseth said that all polling locations closed across the county at 7 p.m., but emphasized that everyone who was in line before the polls closed is still eligible to cast their ballots.

According to Hudspeth, over 93,000 Texans voted in person across 160 Election Day voting locations in Harris County, with about 43,000 voting in the Democratic primary runoff and about 50,000 on the Republican side.

Hudspeth said her office received about 430 calls from voters with questions this Election Day, adding that this was a relatively low number compared to other elections.

Hudspeth called this Election Day a success for Harris County, noting that the county is the third largest in the U.S. and the largest in Texas.

With 61% of the expected vote in, the Associated Press projects incumbent Rep. Christian Menefee to win the Texas Congressional District 18 Democratic primary election runoff, defeating longtime Rep. Al Green.

According to unofficial results, the projection is based on early and absentee voting, with no Election Day votes in yet for either Harris County or Fort Bend County.