Republican Greg Gianforte won the special election for Montana's open U.S. House seat Thursday night and apologized to the reporter who accused the Republican of "body-slamming" him, CNN reported.

With 84 percent of precincts reporting, Gianforte had earned 50.8 percent of the vote to lead Democrat Rob Quist, who polled 43.8 percent, CNN reported, citing Edison Research.

In his acceptance speech, Gianforte apologized by name to Ben Jacobs, the Guardian reporter who made the accusation after an altercation on Wednesday. The Gallatin County Sheriff's office later charged Gianforte with misdemeanor assault, CNN reported.

"When you make a mistake, you have to own up to it," Gianforte told his supporters at his election night rally in Bozeman. "That's the Montana way."

Saying he was "not proud" of his behavior, he added, "I should not have responded the way I did. For that I'm sorry. I should not have treated that reporter that way, and for that I'm sorry, Mr. Ben Jacobs."

Members of the supportive crowd shouted, "You're forgiven."

Gianforte, a technology entrepreneur, was considered the favorite heading into Thursday’s election to fill the seat once held by Interior Secretary Ryan Zinke, but his scuffle with Jacobs raised questions about the outcome.

Democrats had hoped Quist, a Montana folk singer and first-time candidate, could have capitalized on a wave of activism following President Donald Trump's election.

LISTEN: Montana Congressional Candidate Greg Gianforte Allegedly Body-Slammed A Reporter To The Ground