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● InformationalElections / Campaigns

Mamdani-Backed Progressives Win Key Democratic Congressional Primaries

Lander won the Democratic primary for New York’s 10th District, defeating Rep. Daniel S. Goldman.

Mamdani-Backed Progressives Win Key Democratic Congressional Primaries
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This article1 analysis · Oct 5, 2026

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Jun 24, 2026
tl;dr

Three candidates endorsed by New York City Mayor Zohran Mamdani won Democratic congressional primaries, defeating two sitting representatives and boosting the party’s progressive wing. Brad Lander and Claire Valdez also received endorsements from Bernie Sanders and Nydia Velázquez, respectively.

Community verdict

VOTING CLOSED
How does this story look for
Brad Lander D · NY
NOT RATEDCLOSED

No good or bad look here

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

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People in this story

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Democratic candidate in New York’s 10th Congressional District primary

PRIMARY SUBJECT

Democratic candidate for the seat held by retiring Rep. Nydia Velázquez

Valdez's version of this story ↗
Donald Trump
R · President of the United States

President who criticized the progressive candidates in social media posts

Democratic candidate who lost the primary for the seat held by Nydia Velázquez

Bernie Sanders
I · VT · SEN

Senator who endorsed Brad Lander and Claire Valdez

Democratic candidate in New York’s 13th Congressional District primary

House Minority Leader who downplayed the effect of the primaries on the Democratic caucus

Representative defeated by Brad Lander in the New York 10th District primary

Representative defeated by Darializa Avila Chevalier in the New York 13th District primary

Retiring representative whose seat was contested in the primary

ALSO MENTIONED  Zohran Mamdani, New York City mayor who endorsed the winning candidates

Part of a bigger story

13 OUTLETS
Brad Lander Wins Democratic Primary Against Goldman

Brad Lander won the Democratic primary over incumbent Rep. Dan Goldman in New York’s 10th Congressional District. Center outlets place the result in a broader account of Mamdani’s influence and progressive gains, while also noting disputes over Israel and immigration. Right-leaning outlets frame it as part of a socialist or leftward shift in Democratic politics, emphasizing party divisions and, in some coverage, Goldman’s anti-Trump profile.

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