The Texas Senate on Saturday approved new congressional maps drawn to help Republicans win as many as five more House seats in next year’s midterm elections.

Moves by Texas Republicans and California Democrats to redraw their U.S. House districts could disrupt a rare partisan balance in American politics.

California Gov. Gavin Newsom used his Democratic supermajority to push a new congressional map that favors Democrats in an effort to nullify the expected new map from Texas.

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.

California Democrats passed a trio of redistricting bills Thursday, a day after Republicans in the Texas House passed new maps of their own.

Texas Democrats end walkout as GOP-controlled legislature prepares to vote on redistricting maps that could flip five congressional seats to Republicans

The effort is aimed at redrawing the state’s congressional districts after Texas’ GOP-led House advanced its controversial new electoral map a day earlier.

Democratic voters loathe partisan redistricting, but support California doing it to counter Texas, according to a new national poll on Gavin Newsom’s high-stakes gerrymander.