Over 50 Democratic lawmakers from Texas left the state on Sunday to ensure that the state legislature doesn’t have a quorum to pass a redistricting vote being pushed by the GOP.

The lawmakers’ absence means the lower chamber won’t have enough members present to function, stalling passage of a draft map Democrats have condemned as a political power grab.

Texas state House Democrats plan to leave to break quorum of a special session in which Republicans aim to pass a new congressional map that could net the GOP five seats.