BILLINGS, Mont. (AP) — Republican Matt Rosendale has won Montana’s lone seat in the U.S. House.

Rosendale, who serves as Montana’s state auditor, defeated Democrat Kathleen Williams, a former state lawmaker.

The seat was up for grabs as Republican U.S. Rep. Greg Gianforte ran for governor.

Rosendale, 60, is a veteran of statewide campaigns. He first ran for U.S. House in 2014, losing the primary in a crowded field. He narrowly lost his attempt to unseat Democrat U.S. Sen. Jon Tester in 2018.

The former real estate developer hitched his campaign to President Donald Trump and stuck to the Republican party line, promising to protect the Second Amendment and end illegal immigration.

THIS IS A BREAKING NEWS UPDATE. AP’s earlier story follows below.

BILLINGS, Mont. (AP) — Republican Steve Daines has been reelected to the Montana Senate seat he wrested from Democrats six years ago, overcoming his opponent's huge cash advantage to keep the post in GOP hands.

The former business executive and President Donald Trump loyalist defeated Montana's Democratic governor, Steve Bullock.

Daines' 2014 victory broke a Democratic lock on the Senate seat that had lasted more than 100 years. His reelection Tuesday further solidifies Republican political dominance in the state and came on a night that saw his former boss and longtime friend, Greg Gianforte, elected Montana governor.

“I’m very humbled and pleased to see such strong support tonight all across Montana,” Daines told The Associated Press. “This once again shows the great common sense that Montana have. They are not going to be swayed by a bunch of out-of-state money flooding into the state.”

Bullock is a two-term Montana governor who entered the race in March after dropping a presidential bid that attracted little support.

The race was among a handful nationwide expected to decide which party controls the Senate. Political groups and the campaigns poured more than $100 million into the contest.

That's a record-shattering figure for the sparsely populated state that dwarfed spending in much larger battlegrounds and subjected residents of Big Sky Country to a barrage of advertisements virtually any time they turned on their computer, television or radio or opened their mailbox.

Montana’s other congressional race between Republican Matt Rosendale and former Democratic state lawmaker Kathleen Williams was too early to call. Rosendale was trying to keep Montana’s lone U.S. House seat in GOP hands in a streak that dates to 1997.

Rosendale said Tuesday night he would withhold any celebration until all votes were tallied. Rosendale added he was pleased that in the final weeks of the campaign he was able to travel across the state and meet with voters despite the worsening pandemic.

“To go back out and be able to meet with folks again was quite enjoyable. This last week we were really crushing it,” Rosendale said.

Rosendale, a former real estate developer, hitched his campaign to President Donald Trump and stuck to the Republican party line, promising to protect the Second Amendment and end illegal immigration.

Williams lost her bid for the seat in 2018 but came closer than any Democrat in 20 years to winning. Polls suggest she has an even better chance this time around. Victory would make her Montana’s first congresswoman since Jeannette Rankin won the seat in 1940.

Her campaign focused on her career in environmental conservation and the promise of improved health care and public lands protection.

“I entered this race to make sure we have a true independent voice in our lone seat in Congress," Williams said in a video recorded on election night.

Trump's handling of the coronavirus and the economy has loomed over both races, but the president didn't come to Montana to stump for either candidate.

After Trump easily won Montana in 2016, Daines emerged as one of his loyalists and stuck with the president through the coronavirus pandemic, a faltering economy and civil unrest stirred by police killings of people of color.

Daines, a former business executive, was serving his first term in Congress six years ago when Democratic Sen. Max Baucus resigned to become ambassador to China. That opened the seat for the first time since 1978 and Bullock appointed then-Lt. Gov. John Walsh to fill it. Democrats hoped the ploy would give Walsh an advantage but he dropped out late in the race amid a plagiarism scandal, clearing the way for a Daines victory.

Republican voter Debbie Rowe, an insurance agent from Billings, said Daines had been a “great senator” during his first term. She dismissed Democratic allegations that Daines would sell off or transfer public lands.

“When you know the person you can tell when it’s not necessarily the truth,” Rowe said.

Bullock was a private attorney and then served two terms as Montana attorney general before his 2012 election to governor. While seeking the 2020 Democratic nomination for president he adamantly rejected a Senate run, and moved to the left on issues including guns, which Daines would later use against him.

Under pressure from Democratic party leaders including former President Barack Obama, Bullock threw his hat in the ring in March, sticking with the themes that drove his presidential bid: expanded health care access and a pledge to bring a Montana ethos of practical problem solving to Washington.

Within a week of his entering the Senate race, the arrival of the coronavirus upended the state and Bullock was in the limelight as he issued orders closing schools and restaurants followed by a general stay-at-home directive.

Stay-at-home mother Holly Hayes of Laurel, one of the first in line to vote in Yellowstone County on Tuesday morning, said she was impressed with the Democratic governor’s education policies, his handling of the coronavirus and his expansion of Medicaid.

“Steve Bullock has done really well as governor for two terms,” she said. “He had the schools really in mind and all the citizens of Montana in mind.”

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Find AP’s full election coverage at APNews.com/Election2020.