Mayoral candidate Bill Thompson stumped for votes Saturday at the National Action Network headquarters in Harlem, where he also joined many politicians in celebrating the Reverend Al Sharpton's birthday.

Sharpton endorsed Thompson back in July.

The Democratic nominee also tried to engage voters in the race.

"We have 32 days until the election, 32 days. Over the next 32 days, I need each and everyone of you involved in the election, knocking on doors, grabbing your friends, saying to your neighbors, 'We can take this city back and put someone in City Hall who can stand up and fight for all of us,'" said Thompson.

Sharpton enthusiastically referred to Thompson as "the next mayor of the City of New York," but he didn't mention the candidate in an email blast about the gathering, while he mentioned the 18 other officials who would be in attendance.

The other attending Democrats at the event are not uniformly behind Thompson. City comptroller candidate John Liu has campaigned alongside Thompson, but City Council Speaker Christine Quinn has not endorsed him yet.

Meanwhile, in Astoria, Queens, Mayor Michael Bloomberg picked up support Saturday from former City Council Speaker Peter Vallone Sr. and his son, Queens Councilman Peter Vallone Jr.

Both Democrats crossed party lines in 2005 to the support the mayor, who was a Republican at the time. Bloomberg is now an Independent, but he's running on the Republican and Independence Party ballot lines.

"My father and I have always been independent Democrats. We endorse who we believe is best for New York City and for our constituents," said Peter Vallone Jr.

The mayor weighed in on the role that anti-incumbent sentiment may play in the race, but he did not sound too worried.

"Every year, every election, there is always an anti-incumbency thing. And then people tend to get reelected," said Bloomberg.

To help ensure his own reelection, the mayor has spent almost $65 million of his own money and counting. It's a sum the Democratic nominee calls obscene.

"This is all part of Mike Bloomberg attempting to overwhelm the people of New York City with money. They are not going to fall for it," said Thompson.

Yet Thompson has little more than a month to convince voters and fellow Democratic officials to support him.