The battle for control of the House runs through several competitive, Republican-controlled seats in the Golden State. But California’s Democratic delegation is also experiencing significant turnover this cycle.

A half-dozen House Democrats aren’t running for reelection, leaving behind open seats that will feature competitive primaries on March 5. Five of these races are in bright blue territory and several might not be decided until November, since California’s all-party primaries can result in two candidates from the same party facing each other in the general election.

However, the 47th District in Orange County, left open by Democratic Rep. Katie Porter’s run for Senate, is a top Republican target, and whoever wins the bitter Democratic contest could help determine whether the party can hold on to the seat. Two other Democratic members, Reps. Mike Levin and Josh Harder, could also be vulnerable this year, and the primary contests will determine their Republican opponent in November.

CA-09: Josh Harder (D) - San Joaquin County: Stockton, TracyLikely Democrat. Harder easily won reelection last cycle, defeating Republican San Joaquin County Supervisor Tom Patti 55%-45%.

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