Republicans asked a federal court to block newly approved maps in California that were designed to flip as many as five House seats for Democrats.

California voters have approved a ballot measure to redraw the state's congressional map to favor Democrats, marking the party's biggest victory to date in a national battle over redistricting ahead of the 2026 midterms.

Calvert has survived previous redistricting rounds, including in 2021, when the overwhelmingly liberal Palm Springs — the first city in the nation to elect an all-LGBTQ+ city council — was added to his district and the Republican-heavy Temecula was taken out.

SACRAMENTO, Calif. (AP) — California Republicans filed a federal lawsuit Wednesday to block a new U.S. House map that California voters decisively approved at the ballot.

Five districts held by Republicans become potential Democratic pickups, but some remain highly competitive. And a number of incumbent lawmakers have easier pathways to re-election.

California voters passed a ballot measure that could flip as many as five congressional seats to Democrats from Republicans, handing Governor Gavin Newsom a major political victory in his fight against President Donald Trump.

See local results in the 2025 elections for New York City mayor, the governor's races in Virginia and New Jersey and for California's redistricting measure, Proposition 50.

In a major win for Gov. Gavin Newsom and Democrats, the state can now adopt new maps with more blue-leaning districts.

CBS13 political analyst Gary Dietrich talks about candidates quickly announcing they'll run for new California congressional districts, a ballot initiative that could keep new maps for only the 2026 election and what this means for California Republicans.