UPDATE: 9:30 a.m.

The final unofficial tally in the Republican primary runoff race for U.S. District 2 representative shows Dan Crenshaw defeating Kevin Roberts by a margin of 20,322 to 8,760. Crenshaw received 69.88 percent of the vote, and Roberts received 30.12 percent of the vote. All votes are unofficial until canvassed.

The turnout among Republican voters in the election was 50,716, or 2.25 percent of registered voters. According to the Harris County Clerk's website, on May 27, 2014, there were 96,763 Republican voters, or 4.86 percent of registered voters, who participated in the election. On May 24, 2016, there were 39,128, or 1.8 percent of Republican voters, who participated in the election.

May 22, 10:24 p.m.

Dan Crenshaw is the apparent winner in the Republican primary runoff race for U.S. District 2 representative, receiving 19,430 votes to opponent Kevin Roberts' 8,523 votes with 854 of 1,012 precincts reporting, according to unofficial results from the Harris County Clerk's office.

All votes are unofficial until canvassed.

The runoff election was scheduled between Roberts and Crenshaw after neither candidate secured 50 percent of the vote in the March 6 election.

Crenshaw was not immediately available for comment on Tuesday night but shared several remarks from an election night event live on Facebook and expressed optimism about the November election.

“We will win because we will offer a vision that is built around the pursuit of happiness. … Because the colors we see are not black, white or brown, but red, white and blue,” Crenshaw said. “And we will win because our love for this country is deep, and our love for each other is even deeper.”

Roberts conceded and congratulated Crenshaw in a statement on Tuesday night.

"While we did not achieve the result we had hoped for, we can be thankful that Dan Crenshaw, as the Republican nominee, will be [a] tremendous leader for the conservative cause and an inspirational figure in Republican politics," Roberts said. "I want to congratulate him on this night and ask all of our supporters to stand with him in the general election."

Crenshaw will face Todd Litton, the winner of the Democratic primary, in the November election.

The District 2 seat is currently held by Ted Poe, R-Humble, who announced he will retire after his term is up. Roberts is currently District 126 state representative, but he did not run for re-election in order to pursue the seat in Congress. Crenshaw is a retired Navy SEAL.