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Bernie Sanders Backs Mamdani as Cuomo Regains Lead in NYC Mayoral Primary

High-profile endorsements sharpen the race’s progressive versus establishment divide with early voting closing on June 22.

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Democratic mayoral candidates Andrew Cuomo, far left, and Zohran Mamdani, second from right, present arguments as Whitney Tilson, second from left, and Michael Blake look on during a Democratic mayoral primary debate, Wednesday, June 4, 2025, in New York.
Zohran Mamdani stands next to the actor Kal Penn at a rally in Brooklyn, New York, in May 2025. (Madison Swart/Hans Lucas/AFP via Getty Images)

Overview

  • Sen. Bernie Sanders joined Rep. Alexandria Ocasio-Cortez in endorsing Zohran Mamdani’s insurgent bid, praising his commitment to fighting corporate and oligarchic power.
  • Polymarket now gives former Gov. Andrew Cuomo a 73 percent chance of winning compared with 25 percent for Mamdani, reversing a recent surge by the progressive candidate.
  • Early voting runs through June 22 and the ranked-choice primary is set for June 24, allowing New Yorkers to rank up to five candidates.
  • Mamdani’s platform calls for 200,000 new affordable homes, a citywide rent freeze, free bus service and city-run grocery stores funded by higher taxes on the wealthiest New Yorkers.
  • The New York Times Editorial Board and major labor unions have thrown their support behind Cuomo, citing concerns about Mamdani’s experience and his readiness to manage the city.