AUSTIN, Tex. — With little more than a week left in Texas’ 30-day special legislative session, a barrage of corporate advertising and activism has the potential to sink legislation restricting transgender bathroom use that has been a flash point in the state’s culture wars.

Social conservatives and the state’s powerful lieutenant governor, Dan Patrick, have backed the legislation. Gay rights groups, business groups and the House speaker, Joe Straus, one of the few powerful moderate voices in the Texas Legislature, have opposed it. But after the State Senate, where Mr. Patrick presides, passed a bill, a narrower one is showing few signs of life in the 150-member House.

Read more in The New York Times.