Updated at 1:06 a.m.
Reps. Brad Sherman and Howard Berman both advanced past California's primary on Tuesday, as the two veteran Democrats will continue to battle one another through November in what is expected to be among the nation's most expensive House races.
The showdown was the marquee matchup in a state upended by redrawn political maps and new election rules that allow the top-two vote getters, regardless of party, to advance to the general election.
The Associated Press said both would advance as Sherman topped Berman 39 percent to 35 percent, with only a small fraction of the vote counted. The two Democrats have already sunk more than $5.5 million into the race and have millions more already stashed away.
In another incumbent showdown, Rep. Janice Hahn was leading Rep. Laura Richardson in early tallies, with both Los Angeles-area Democrats advancing to the fall general election.
Other highlights from the Golden State include:
CA-10: Chad Condit, the son of former Democratic Rep. Gary Condit, fell short of his bid as an independent for Congress. Republican Rep. Jeff Denham, advanced along with top Democratic recruit Jose Hernandez, a former astronaut. The race is a Democratic target in the fall.
CA-01: In the race to replace retiring Republican Rep. Wally Herger, Republican state Sen. Doug LaMalfa finished first and is expected to ease past Democrat Jim Reed this fall in the safe GOP district.