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 winnable seats for the GOP.

Texas Republicans are moving closer to approving new congressional maps amid a Democratic show of protest over the GOP House speaker’s order that members who fled the state weeks earlier be placed under law enforcement watch.

After two weeks out of state, Democratic lawmakers returned to Austin, paving the way for Republicans to pass their proposed congressional map.