Mr. Mamdani’s victory upended city politics and reverberated nationally. He relied on a memorable message, charisma and a strong ground game.

The president, who has a history of spewing sometimes vile insults at rivals, has in recent days escalated his attacks against the 33-year-old self-described democratic socialist. Trump has threatened to arrest Mamdani, to deport him and even to take over the country’s largest city if he wins the general election in November.

Zohran Mamdani, the Democratic nominee for New York City mayor delivered remarks at a primary victory celebration with leaders and members of the city's labor unions in Manhattan, New York, on July 2,

He gave $50,000 to a super PAC backing Zohran Mamdani’s bid for New York City mayor.  “In the final weeks of the campaign, it became clear he was the only candidate with viable polling who actually wanted the job and whose decisions would be made with the best interests of all New Yorkers in mind,