How Kamala Harris changed the course of LGBT history.

The presidential candidate nearly lost the race for California attorney general in 2010. Her narrow victory enabled marriage equality to advance. (Image: Getty)

November 2, 2010, was a rough night for Kamala Harris. While Democrats swept every statewide executive office in California, the candidate for state attorney general seemed headed for defeat. Harris, then the San Francisco County district attorney, was trailing her opponent, Republican Los Angeles…