The Assembly passed the measure 57 to 20, and lawmakers on the floor erupted in applause even before they closed the vote.

Gov. Gavin Newsom and Democratic state lawmakers moved quickly to create new districts that could help their party flip five congressional seats. Their plan still requires voter approval.

If approved by voters, the California redistricting could nullify five new U.S. House seats Republicans are expected to gain from a new redistricting map in Texas.