Texas’ Republican-led legislature gave initial approval to a controversial new electoral map on Wednesday, a redistricting move designed to give the GOP an additional five seats in the U.S.

More Texas House Democrats spent the night at the state Capitol in Austin in support of Rep. Nicole Collier, who wasn’t allowed to leave the building after she refused to consent to a police escort. Texas House Republican leaders would only allow Democratic lawmakers to return to their homes if they signed waivers allowing law enforcement to shadow them until a vote on redistricting Wednesday.

Several Texas state House Democrats ripped up the written agreements that allowed them to leave the chamber with a police escort and returned to the House floor Tuesday night, the caucus announced.