Not every Boricua at Sunday’s Puerto Rican Day parade was showing love for the Puerto Rican candidate for mayor, Fernando Ferrer. The event’s president, Ralph Morales, shouted “Get the f– out of here” to a top aide of the Democratic front-runner, El Diario’s Gerson Borrero reported yesterday.

From his spot in the parade with the Latino Officers Association, civil rights lawyer Norman Siegel, a candidate for public advocate, said he spotted a scuffle breaking out and went over to investigate. Mr. Morales, who is said to be a backer of Mayor Bloomberg, was apparently unhappy with the gigantic “Ferrer: People’s Choice for Mayor” banner. Despite heated requests to put the banner away, the Ferrer associate, Roberto Ramirez, refused. As the two men exchanged fierce words and some pushing, live radio was feeding to Puerto Rico, Mr. Borrero reported.

“They were at each other, jarring,” Mr. Siegel said. “It looked like they were going to have heart attacks because it was so hot out.”

Mr. Siegel, having sought to carry a banner for his own campaign, said he thought he understood the rules of political representation. When he inquired about permission to carry a banner, his staff was told an application had to be submitted by April 15 and the city allows political banners at private parades. To him it seemed strange that 20 blocks into the parade, action would be taken against the largest banner there.

Before Mr. Siegel had a chance to help mediate, however, friends of Mr. Morales came over and told him to relax. Mr. Borrero, there reporting for El Diario, said he told Mr. Morales, “Ralph, you’ve got cameras rolling, you’ve got mikes that are live, you better shut up and just walk away from this.”

Mr. Borrero, who said Mr. Morales has told him he is interested in consulting for the Bloomberg campaign, speculated that the parade president’s reaction was a matter not of parade decorum but of politics. The journalist also said that while past presidents of the parade have marched with the event’s organizers and honorees, Mr. Morales accompanied the mayor throughout.

Mr. Morales could not be reached for comment. His voice mail was filled and not accepting additional messages.

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Last week, a pledge by a Democratic mayoral candidate, Rep. Anthony Weiner, to get an Olympic stadium built in Queens sounded like an empty election-year promise.

But with Mr. Bloomberg’s announcement Sunday that the city would help the Mets build a new stadium at Willets Point and would incorporate it in the city’s bid for the 2012 Olympics, Mr. Weiner had managed to fulfill a campaign pledge without having been elected.

For more than a year, the congressman, who represents parts of Queens and Brooklyn, had been the most vocal of the mayoral candidates in calling for an Olympic stadium in Queens.

And until the leaders of the state Legislature, Sheldon Silver and Joseph Bruno, quashed the mayor’s plans for a football-cum-Olympics stadium on the Far West Side, the Queens option had been dismissed by the Bloomberg administration.

“There’s a very strong instinct in me to say I told you so,” Mr. Weiner said to reporters yesterday.

Speaking of Mr. Bloomberg and his deputy mayor for economic development, Daniel Doctoroff, who has spent more than a decade working to bring the Olympics to the city, Mr. Weiner said: “All they could do is deride the idea of Willets Point. Now they consider it a masterstroke. I just wish they would have reached that point sooner.”

A political consultant, Scott Levenson, president of the Advance Group, said the failure of the West Side stadium has solidified the impression among the public that Mr. Bloomberg is a “Manhattan-centric mayor,” a label he can ill afford given his slim 40,000-vote margin of victory in 2001. Meanwhile, outer-borough candidates such as Mr. Ferrer and Mr. Weiner could benefit.

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The City Council speaker, Gifford Miller, was endorsed for mayor yesterday by the New York chapter of Democracy for America, a political action committee founded by a former presidential candidate, Howard Dean, and, since his election as Democratic national chairman, run by his brother James Dean. Democracy for New York City aims to support fiscally responsible, socially progressive candidates. The Deans’ mother, Andree Dean, lives in Mr. Miller’s home territory, the Upper East Side, and the speaker endorsed the former Vermont governor’s Democratic presidential campaign.

In a statement, Mr. Miller accepted the endorsement and said: “DFNYC, and the thousands of New Yorkers that it brings to the table, will be a crucial part of our effort to take New York in a new direction.”