Republican Gov. Greg Abbott called a special session of the Legislature that started last month to take up the redistricting effort that President Donald Trump has urged.

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.