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Mamdani-Backed Claire Valdez, Darializa Chevalier Stage Upsets in NY

Chevalier defeated Rep. Adriano Espaillat in a closely watched primary after Mamdani backed her challenge.

Mamdani-Backed Claire Valdez, Darializa Chevalier Stage Upsets in NY
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This article1 analysis · Oct 5, 2026
tl;dr

Claire Valdez and Darializa Avila Chevalier won New York Democratic congressional primaries after Mayor Zohran Mamdani backed their challenges to established Democrats. The results also included losses for Alex Bores and a Republican primary upset by Anthony Constantino.

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No good or bad look here

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

● INFORMATIONAL

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Democratic congressional candidate who defeated Rep. Adriano Espaillat in the primary

PRIMARY SUBJECT

Democratic congressional candidate who won the primary against Antonio Reynoso

Valdez's version of this story ↗

Democratic congressional candidate who defeated Alex Bores

Democratic congressional candidate who lost to Micah Lasher

Republican candidate defeated by Anthony Constantino

Democratic congressional candidate who finished behind Alex Bores

Cori Bush
Former U.S. Representative (D-MO)

Former representative cited as an example of progressive candidates later losing elections

Carolyn B. Maloney
Former U.S. Representative (D-NY)

Former representative who supported Alex Bores

Donald Trump
R · President of the United States

President who endorsed Anthony Constantino

Democratic candidate defeated by Claire Valdez

Democratic congressional candidate in the Manhattan primary

Mamdani-aligned Democrat who defeated Rep. Daniel Goldman

Gun-control advocate and former rival of Alex Bores

Democratic candidate who will face Anthony Constantino

Representative defeated by Brad Lander

Republican congressional candidate who won the primary against Robert Smullen

Representative defeated by Darializa Avila Chevalier in the Democratic primary

Retiring representative and supporter of Antonio Reynoso

Representative whose former district is the setting for the Republican primary

ALSO MENTIONED  Zohran Mamdani, New York City mayor whose endorsements and campaign involvement featured in the primaries; Eric Schneiderman, Former New York attorney general mentioned as Lasher’s former employer; Jamal Bowman, Former representative cited as an example of a progressive candidate later defeated; Charles Rangel, Former representative cited as the district’s longtime representative; Mike Bloomberg, Former New York City mayor mentioned as Lasher’s former employer; Nithya Raman, Los Angeles politician mentioned as a possible beneficiary of the New York results; Jerry Nadler, Retiring representative who supported Micah Lasher

Part of a bigger story

8 OUTLETS
Darializa Avila Chevalier Defeats Adriano Espaillat in Primary

Outlets agree Darializa Avila Chevalier defeated incumbent Adriano Espaillat in New York’s 13th District Democratic primary. Center outlets connect the win to Mayor Zohran Mamdani’s backing and influence, while also covering Chevalier’s challenge to Espaillat. Right-leaning outlets present the result as part of a broader ideological shift and criticize progressive politics; one article also emphasizes voter demographics.

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