Contested top-two primaries in Calif. U.S. House elections, 2014-2024

Showing the percentage of possible top-two primaries in California that were contested from 2014 to 2024. The total numbers of primaries in each election cycle are shown in parentheses.

California had 52 U.S. House districts in the 2022 and 2024 election cycles and 53 in all other cycles shown.
Ballotpedia