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DSA vs. Establishment: New York Primary Tests Growing Antiwar Split in Democratic Party

Valdez is running for the seat Nydia Velázquez is leaving, with support from DSA and Mayor Zohran Mamdani.

DSA vs. Establishment: New York Primary Tests Growing Antiwar Split in Democratic Party
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This article1 analysis · Oct 5, 2026
tl;dr

On New York’s primary day, the article examines DSA-backed congressional challengers Darializa Avila Chevalier and Claire Valdez and the party divisions their races represent. A Jacobin columnist says opposition to U.S. policy toward Israel is helping drive support for the challengers.

Community verdict

VOTING CLOSED
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NOT RATEDCLOSED

No good or bad look here

This story reports what happened without casting Valdez in a good or bad light, so readers don’t rate it and it doesn’t count toward Valdez’s record.

● INFORMATIONAL

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DSA-backed candidate for the open seat in New York’s 7th Congressional District

PRIMARY SUBJECT

Brooklyn Borough President and candidate for the open seat in New York’s 7th Congressional District

Reynoso's version of this story ↗

DSA-backed candidate challenging Adriano Espaillat in New York’s 13th Congressional District

Avila Chevalier's version of this story ↗

Former city comptroller and candidate challenging Representative Daniel Goldman

House Minority Leader cited by Featherstone as part of Democratic leadership

Chuck Schumer
D · NY · SEN

Senate Minority Leader cited by Featherstone as part of Democratic leadership

Representative facing Brad Lander in a primary challenge

Representative facing a DSA-backed primary challenger in New York’s 13th Congressional District

Representative leaving the seat sought by Valdez and Reynoso

ALSO MENTIONED  Aber Kawas, DSA candidate for the New York State Senate; Conrad Blackburn, DSA candidate for the New York State Assembly; Eon Huntley, DSA candidate for the New York State Assembly; Julia Salazar, New York elected official described by Featherstone as an early socialist elected in the current wave; Vito Marcantonio, Former New York socialist congressman mentioned as historical context; Zohran Mamdani, New York City mayor who backs DSA congressional candidates and Brad Lander

Part of a bigger story

10 OUTLETS
Valdez, Lander and Avila Chevalier Win New York City Democratic Primaries

Valdez, Brad Lander and Darializa Avila Chevalier won New York Democratic congressional primaries; all three were backed by Mayor Zohran Mamdani. Valdez won the primary for the open seat Nydia Velázquez is leaving. Left-leaning outlets cast the wins as progressive momentum challenging the Democratic establishment, with one article also examining an antiwar split. Center outlets focus on Mamdani’s influence and what the results signal for the party, alongside other primary races. Right-leaning outlets emphasize the winners’ socialist identity and frame the results as a setback for party leaders or a troubling expansion of socialist influence.

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