BOSTON (AP) – In many ways, San Francisco Mayor Gavin Newsom’s schedule at the Democratic National Convention befitted an ambitious young politician on the move – by day, he toured Boston’s low-income housing projects and by night, he was honored at celebrity-laden parties.

But since gaining notoriety last February as the nation’s most prominent crusader for same-sex marriage, there was one conspicuous place Newsom was not seen that week: at the podium, addressing the convention.

“Unless there’s an outbreak of the flu or something, and they’re desperately searching for someone,” would he have gotten a speaking slot, Newsom said with a laugh.

It’s an interesting turn of events for the 36-year-old Newsom, whose combination of glamour and earnest policy convictions positioned him as a rising star in the Democratic Party when he was first elected in December.

After launching San Francisco’s high-profile gender neutral marriage license spree in February, Newsom became something of a political hot potato for top Democrats bracing for a fight over a Republican-backed constitutional amendment banning same-sex marriage, as well as a Massachusetts court order setting a May 17 date for same-sex couples to begin to wed legally in that state.

“I had this little idea, you think they would have embraced it,” Newsom later joked.

The California Supreme Court ordered a halt to San Francisco’s same-sex marriage experiment in March, and the court is expected to rule soon on whether Newsom overstepped his authority.

Publicly, the Kerry campaign had little to say about the decision not to offer Newsom a speaking spot.

“We have so many elected officials and we’d love to have them speak at the convention,” spokesperson Alison Dobson said at the DNC. “We’re thrilled to have him as a delegate, and he’s certainly part of the convention.”

Some strategists said Newsom probably could have gotten a speaking slot – during the day, away from prime time – had he pushed. Others said the appearance of being snubbed makes Newsom a more visible and influential symbol.

“Even though he isn’t speaking, he is one of the most sought-after people at this convention because his courageous deeds have spoken louder than anything that could be said in a speech,” said Democratic strategist Chris Lehane during the convention.

Newsom was the guest of honor at parties hosted by Salon and GQ magazines. GQ’s extravaganza, which gained buzz as one of the “hot” convention parties, expected director Rob Reiner, comedian Al Franken and Andre of the hip hop band Outkast among its guests.

For his part, Newsom appeared unfazed and said he was too new in his job as mayor to warrant a major role at the podium. But in a recent radio interview, Newsom acknowledged that his presence in Democratic presidential nominee John Kerry’s orbit might be a bit too radioactive for the campaign to handle.

“If there is a photo op of Kerry and I… there are 320 reporters following him around. What are they going to ask?” Newsom told San Francisco radio station KFOG.

Newsom said Kerry’s job right now is to appeal to swing voters.

Winnie Stachelberg, political director of the Human Rights Campaign, said she was satisfied that the Kerry campaign had taken steps to feature supporters of gay rights at the convention as well as prominent gay and lesbian speakers, including Wisconsin Rep. Tammy Baldwin.

“I think it reflects the priority of this country at this time,” Stachelberg said.

Convention speaker or not, Newsom said what he set forth in San Francisco had “significantly” helped the Democratic Party and helped eventually defeat the anti-gay marriage amendment in the U.S. Senate.

“It took pressure and focus away from Massachusetts and the fact that people are getting married here every day,” Newsom said while in Boston for the convention. “And it forced Bush’s hand early in terms of his support for the constitutional amendment. They miscalculated, they failed and they were embarrassed.”

Newsom said one goal for his convention week schedule was to witness legal same-sex marriage in Massachusetts firsthand: “To me it’s an extraordinary thing, to see human beings and their relationships being validated.”