Los Angeles Mayor and Democratic Convention Chairman Antonio Villaraigosa calls for a vote to amend the platform the Democratic National Convention in Charlotte, N.C., on Sept. 5, 2012. (Associated Press)

Photo by: Charles Dharapak

Los Angeles Mayor and Democratic Convention Chairman Antonio Villaraigosa calls for a vote to amend the platform the Democratic National Convention in Charlotte, N.C., on Sept. 5, 2012. (Associated Press)