Biden Fund-Raiser and Trump Visit to New York Preview Clashes to Come

The epicenter of the presidential campaign shifted to New York on Thursday, as the incumbent president and three of his predecessors descended on the area for dueling events that illustrated the kinds of political clashes that could come to define the general election.

For Democrats, it was a high-profile, celebrity-studded fund-raiser for President Biden in Manhattan. On Long Island, former President Donald J. Trump attended a wake for a New York City officer who was killed during a traffic stop on Monday. Together, the day’s events struck an unusual contrast in a general election campaign that has so far been largely defined by appearances in courtrooms and at small, invitation-only events.

Mr. Biden, along with Barack Obama and Bill Clinton, appeared before 5,000 donors at a Radio City Music Hall event that campaign aides said raised $25 million. The eye-popping number set a record for a single political event, according to the aides, and offered a star-studded show of Democratic unity as the president heads into a difficult re-election campaign.

The three Democratic presidents spent much of their time in New York City wrapped in the glitz of their celebrity supporters. Tieless and in matching white shirts, they sat for an interview on a celebrity podcast, were roasted by the comedian Mindy Kaling and interviewed by Stephen Colbert, a late-night host.

Mr. Trump, the presumptive Republican nominee, made his own appearance in the area several hours earlier, at a funeral home on Long Island surrounded by hundreds of police officers and family members of the slain officer. While not officially a campaign stop, aides used the appearance to draw a sharp contrast with Mr. Biden, attacking the Democrats for spending their evening with donors and celebrities. In recent weeks, Mr. Trump has spent far more time battling in court than in battleground states.