Incumbents Ken Calvert (R) and Young Kim (R) defeated six other candidates to win the top-two primary for California's 40th Congressional District on June 2, 2026, receiving 35% and 21% of the vote, respectively. Calvert, Kim, Joe Kerr (D), and Esther Kim Varet (D) led in campaign fundraising and polling ahead of the election.
Calvert represents California's 41st Congressional District, and Kim represents the 40th District. The two incumbents were drawn into the same district as a result of Proposition 50, a redistricting amendment voters approved in November 2025. According to ABC7's Josh Haskell, Calvert represents 51% of the new district and Kim represents 35% of the new district. Based on 2024 presidential results, the new district is 10 percentage points more Republican than the old district.
Calvert was first elected to Congress in 1992. He earned his associate degree from Chaffey College and his bachelor's degree from San Diego State University. Before his election to Congress, Calvert was a small business owner in the restaurant and real estate industries.
