Howard Berman conceded early Wednesday morning, saying his opponent, Brad Sherman is the winner of the race.
"I congratulate Brad and my friend Tony Cardenas who will have the honor and solemn responsibility of representing the San Fernando Valley in the 113th Congress," Berman said in a statement. "I wish both of them the best of luck and the wisdom and strength to confront and overcome the challenges that face our nation. I will do whatever I can to ensure a cooperative and orderly transition."
With 100 percent of the precincts reporting, Sherman has 109,311 votes to Berman's 71,420 votes.
The concession ends the long congressional career of Berman, who at 71 is the ranking Democrat on the House Foreign Affairs Committee.
Sherman and Berman are both Democrats and incumbents. Redistricting forced their face-off in the general election.
Sherman was favored to win largely because of a geographical advantage. Berman's district was more primarily concentrated in Los Angeles' Westside, whereas Sherman's constituents were mainly in the San Fernando Valley, where the new district lines are more heavily concentrated.
The two were aggressive during the campaign. Things got so heated that during a recent debate at Pierce College, it appeared that Sherman and Berman were about to physically fight.