U.S. Rep. Andy Biggs, a fierce ally of President Donald Trump and former head of the House Freedom Caucus, won the Republican nomination for Arizona governor Tuesday.

Democrats were locked in a close primary contest for a battleground U.S. House district, with emergency physician Amish Shah leading party-backed Marlene Galán-Woods for the chance to take on Jay Feely, the former Arizona Cardinals kicker who won the Republican nomination with Trump’s endorsement.

A Shah victory would be another defeat for the Democratic Congressional Campaign Committee, which has occasionally struggled this year as voters seek out antiestablishment candidates. The race was too early to call early Wednesday morning.

Biggs overwhelmingly defeated fellow U.S. Rep. David Schweikert in the primary and will face Democratic Gov. Katie Hobbs in what could be one of the closest governor races in November.

By choosing Biggs, who supported Trump’s failed attempt to block certification of his 2020 election loss, Republican voters risk nominating another conservative warrior who excites the party base but fails to win a general election by turning off independents. Although the party once dominated Arizona, Democrats now hold both U.S. Senate seats and the top three state offices.

Biggs faced travel problems leaving a Republican Governors Association meeting in Colorado, according to senior adviser Drew Sexton, and didn’t reach his victory party in Scottsdale until more than three hours after he won the race. By the time he took the stage, the crowd of hundreds had dwindled to dozens and he spoke to a mostly empty room.

“Let’s make this the year that we turn Arizona red again,” Biggs said.