Texas state Sen. Wendy Davis

UPDATE: Led by Davis, and with the help of protesters in the Senate gallery, Democrats were ultimately able to run out the clock and defeat the bill, the Texas Tribune reports.

Democratic state Sen. Wendy Davis of Fort Worth, who happens to be an LGBT ally, is in the midst of a 13-hour filibuster aimed at killing sweeping GOP-backed abortion restrictions in Texas. Davis must remain standing throughout the filibuster, without leaning on anything, and cannot take a bathroom break. She has been warned twice for breaking the rules — most recently for getting help from a colleague adjusting her back brace. If Davis receives one more warning and it’s upheld, the Senate can vote on whether to end the filibuster, which must continue until the end of the special session at midnight to be successful. Davis’ filibuster is now a trending topic nationally on Twitter and has spawned accounts such as @WendysBackBrace. Watch Davis’ historic filibuster live below.