California's 48th Congressional District is represented by Darrell Issa (Republican), who has served in the House since 2021 and has represented this district since redistricting in 2023. Issa has an overall VoteSee report card grade of B, voted in 99% of roll-call votes on bills this Congress, and votes with the Republican majority 95% of the time. The district includes Murrieta, Temecula, and Escondido. It takes in all or part of 2 counties, and 66% of residents live in San Diego County. About 761,000 people live in the district, and the median household income is $113,202.
Darrell Issa (Republican) has served in the House since 2021 and has represented California's 48th Congressional District since redistricting in 2023.
See Darrell Issa's full voting record and issue positions →
Winner: Marni von Wilpert.
This is an open seat: Darrell Issa is not running for re-election. 2 candidates were on the Nov 3, 2026 ballot.
California uses a top-two primary, so the two November candidates can be from the same party.
Polls: No public polls
Source: American Community Survey 2020–2024 5-year estimates, 119th Congress boundaries.
Members of Congress who previously represented California's 48th Congressional District. District lines are redrawn after each census, so earlier members may have represented a different area under this number.
California's 48th Congressional District covers 3,615 square miles of land. Boundaries are for the current (119th) Congress.