A tearful Mayor Jerry Sanders made a dramatic shift yesterday, explaining that he can no longer oppose same-sex marriages because he does not want to deny justice to people like his daughter, who is a lesbian.

Joined at a late afternoon news conference by his wife, Rana Sampson, the San Diego mayor announced he will back a City Council decision to support same-sex marriage before the state Supreme Court, where California's ban on it awaits review.

"I decided to lead with my heart, which is probably obvious at the moment," said Sanders, moments before he revealed his daughter's sexual orientation.