Texas Democrats have left the state in an attempt to prevent the state House from holding a vote Monday on new congressional maps that Republicans hope will net them several additional U.S.

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.

A plane load of Texas Democrats arrived in Illinois on Sunday in a rarely used act of political maneuvering.The group left the Lone Star State in a last-ditch effort to disrupt a Republican plan to redistrict the state by denying GOP lawmakers a quorum to advance their new map.