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Two House Republicans Will Face Off for California’s 40th District

NOTUS · June 10, 2026

Redistricting forced Reps. Ken Calvert and Young Kim to run for the same seat, and the primary results mean the grueling and expensive battle will extend to November.

If Rep. Young Kim loses in the general election, her ouster would be one of the first Republican casualties in California in the aftermath of Proposition 50, the redistricting measure California Democrats launched to counter Republicans’ redistricting in Texas. Bill Clark/AP

California voters passed a redistricting ballot measure last year that altered the lines of California’s 40th Congressional District. That change forced two Republican House members into a primary race for the redrawn seat, and those two incumbents will now move on to November’s general election, according to Associated Press projections.

Rep. Ken Calvert and Rep. Young Kim advanced in the nonpartisan primary, topping six other Democratic or politically unaffiliated candidates to square off for a seat Cook Political Report categorizes as solidly Repub…