Rep. Brad Sherman (D-Calif.) defeated fellow Democratic Rep. Howard Berman in their member-vs.-member match-up.

It was a nasty campaign, with the two lawmakers almost coming to blows during a debate and having to be separated by a police officer.

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Sherman led with 40 percent of the vote to Berman's 20 percent. He was favored to win. Berman conceded after The Associated Press called the race.

The redistricting process put the two men in the same seat, which contained much of Sherman's old territory. Under California's new primary system, the top two vote-getters, regardless of party, move on to the general election.

Democratic leadership indicated a preference for Berman, with Rep. Steny Hoyer (D-Md.), the No. 2 in leadership, endorsing him. Berman also had the endorsement of prominent Republicans like Sens. John McCainJohn Sidney McCainTrump's dangerous Guantánamo fixation will fuel fire for terrorists Tech beefs up lobbying amid Russia scrutiny Ad encourages GOP senator to vote 'no' on tax bill MORE (R-Ariz.) and Lindsey GrahamLindsey Olin GrahamAlabama election has GOP racing against the clock Graham on Moore: 'We are about to give away a seat' key to Trump's agenda Tax plans show Congress putting donors over voters MORE (R-S.C.), who cited his work on the House Foreign Affairs Committee.

Sherman, meanwhile, had the support of former President Clinton.

—This story was updated at 5:28 a.m.