Texas Democrats have fled the Lone Star State in an effort to block Republicans from advancing state House maps that advantage the GOP by five seats.

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.

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.