Jim Vertuno / Associated Press

President Donald Trump’s call to redraw U.S. House districts before the 2026 elections has led to a wave of political maneuvering among state-level Republicans and Democrats. The current mid-decade redistricting is being driven partly by the close political margins in Congress.

Democrats hold 43 out of California’s 52 U.S. House seats. The proposal would try to expand that advantage by targeting battleground districts in Northern California, San Diego and Orange counties, and the Central Valley.