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Mamdani-Backed Progressives Win Three New York Democratic Primaries

Victory for Mamdani’s picks strengthens his political coalition while raising the prospect of a leftward shift in House Democratic ranks before the November midterms.

Overview

  • The primaries on Tuesday delivered a clean sweep for Mayor Zohran Mamdani’s endorsements as Brad Lander, Claire Valdez and Darializa Avila Chevalier won their Democratic nominations.
  • Lander defeated incumbent Rep. Dan Goldman in NY‑10, Valdez won the open NY‑7 contest, and Avila Chevalier narrowly ousted five‑term Rep. Adriano Espaillat by roughly three to three-and-a-half percentage points in NY‑13.
  • The three districts are strongly Democratic, so the primary winners are heavily favored to take the seats in November, making these outcomes likely to change the composition of the next House Democratic caucus.
  • Races were driven by policy divisions over housing, immigration enforcement and stances on Israel and Gaza, and they drew six‑ and seven‑figure outside spending plus high‑profile endorsements on both sides.
  • Controversies over archived social posts and past protest organizing followed some candidates through the campaign, and winners’ resistance to fully committing to House leadership raises questions about internal party unity going into the midterms.