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Warren Rallies With Mamdani as Party Divisions Deepen Ahead of NYC Mayoral Race

His push for radical affordability measures has drawn Sen. Warren’s endorsement, signaling intensifying establishment resistance alongside Republican attack campaigns.

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Graffiti, including Stars of David, is seen on posters of Zohran Mamdani, Democratic candidate for mayor of New York, on July 22, 2025 in New York. (Charly Triballeau/AFP via Getty Images/Courtesy)

Overview

  • Sen. Elizabeth Warren joined Mamdani at a DC37 union event to champion his free childcare proposal and urged Senate Minority Leader Chuck Schumer and House Minority Leader Hakeem Jeffries to endorse his affordability agenda.
  • Sen. Cory Booker reiterated his refusal to endorse Mamdani, framing the choice as pragmatic governance over ideological labels and opting instead to focus on New Jersey contests.
  • Ohio Republican Vivek Ramaswamy and allied billionaire donors have launched advertisements and pledged war chests portraying Mamdani’s wealth-tax proposals as threats to the city’s economy and housing market.
  • Mamdani maintains a polling lead in the general election despite establishment Democrats withholding formal backing and faces legislative hurdles in Albany, where Gov. Kathy Hochul and lawmakers oppose major tax increases.
  • Independent campaigns from Andrew Cuomo and Eric Adams risk splitting anti-socialist votes under ranked-choice voting, making coalition-building a decisive factor in November’s four-way race.