Zohran Mamdani’s victory stunned New York. The 34-year-old democratic socialist surged ahead early, earning over 1.03 million votes—more than all opponents combined—to become the city’s first Muslim and South Asian mayor. The campaign had been tense. President Donald Trump repeatedly mocked Mamdani as “a pure communist,” warning that a Mamdani administration would “destroy New York” and hinting that federal funding...