Democratic socialist Zohran Mamdani basked in his history-making election as New York City's mayor Tuesday, but harsh reality loomed: the wrath of a president who's threatening to withhold federal money from a city that relies on billions from D.C. each year.

Why it matters: Mamdani's ambitious ideas to boost affordability in New York are now at a crossroads with President Trump, who's eager to thwart the mayor-elect and — with the 2026 midterms in mind — cast him as a "communist" symbol of the Democratic Party.

Zoom out: Even before New Yorkers went to the polls Tuesday, Trump — a former Manhattan resident — made clear he opposed New York electing the 34-year-old progressive who's called himself "Donald Trump's worst nightmare." • On Monday, Trump took to Truth Social to reiterate his

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