Tom Ammiano is an American politician and LGBT rights activist from San Francisco, California. Ammiano, a member of the California Legislative LGBT Caucus, served as a member of the California State Assembly from 2008 to November 30, 2014. He had previously been a member of the San Francisco Board of Supervisors and had mounted an unsuccessful bid for mayor of San Francisco in 1999. He was succeeded as California's Assemblyman for District 17 by San Francisco Board of Supervisors President David Chiu on December 1, 2014.