California Democrats are making moves to put a ballot measure pushing pro-Democratic maps before voters this fall. Other Republican-controlled states are looking at redraws, too.

Both parties expected Republicans to win an early round Wednesday in a growing national redistricting battle by pushing a new congressional map creating five new potential GOP seats past its biggest obstacle in the Texas Legislature.

The dueling efforts by the two most populous states mark an unusual mid-decade showdown over election maps that has erupted across the country and exacerbated tensions between the