To get final approval, the state legislature’s upper chamber will take a vote, which is forecasted to happen this weekend, the Texas Tribune reports. However, a Houston Democratic state senator has plans to delay the final passage.

Senator Carol Alvarado revealed her filibuster plans in a post on social media. “Republicans think they can walk all over us. Today I’m going to kick back,” Alvarado’s post read. “I’ve submitted my intention to filibuster the new congressional maps. Going to be a long night.”