Rep. Martha Roby (R-AL) said on Twitter Saturday morning that she will no longer vote for Donald Trump in the November Election.

Roby said that while he has been disappointed with Trump on numerous occasions before, “I thought supporting our nominee was the best thing for our country and our party.”

Donald Trump’s behavior makes him unacceptable as a candidate for president, and I won’t vote for him. Full statement: pic.twitter.com/Ge7GU1TSvm — Rep. Martha Roby (@RepMarthaRoby) October 8, 2016

Roby won her election in 2010 and has been one of the more conservative voices in the House. Her district is reliably conservative and includes plenty of voters who supported Trump in the primary.