The wealthy in New York City are on the move, spurred by what some are calling the “Mamdani Effect”—a sudden surge of outward migration in anticipation of Zohran Mamdani, a democratic socialist, likely taking the reins as mayor this November.

As polls point ever more decisively to a Mamdani victory in the fast-approaching Nov. 4 election, Manhattan’s elite are quietly packing their bags and setting their sights on the rolling lawns and leafy streets of Westchester County as well as other suburban enclaves.

Real estate agents in Westchester, directly north of the city’s border, say the torrent began shortly after Mamdani’s surprise win in the Democratic primary this June. Zach and Heather Harrison, who represent The Harrison Team at Compass , told Realtor.com they’ve experienced “a sp

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