California Democrats are taking a series of votes in a bid to pass a mid-decade redistricting plan, a day after Republicans in the Texas House passed new maps of their own. In California, the state Assembly and Senate are taking up a trio of bills that will allow for a special election to pass a constitutional amendment to replace the state’s existing congressional maps through 2030.

The first domino in a growing national redistricting battle is likely to fall Wednesday as the Republican-controlled Texas legislature is expected to pass a new congressional map creating five new wi...

Texas Democratic lawmakers delayed the vote for 15 days by leaving the state in protest, depriving the House of enough members to do business.