New York City Mayor Zohran Mamdani endorsed Democratic Socialist Darializa Avila Chevalier on May 28, 2026 [1], for the Upper Manhattan U.S. House primary.
The move represents a significant political shift for the mayor, who had previously pledged to support the incumbent Representative Adriano Espaillat. By backing a challenger from the Democratic Socialists of America, Mamdani is signaling a preference for more progressive representation in the district.
Chevalier, who is 32 years old [3], is challenging Espaillat in a race that has become a focal point for the city's progressive wing. Mamdani said he is backing the Democratic Socialist challenger to position himself against an incumbent he described as AIPAC-backed [5].
This endorsement marks a reversal of the mayor's earlier commitment to the incumbent. The decision to pivot toward Chevalier comes as the primary election approaches on June 23, 2026 [2].
Rep. Espaillat has long held the seat in Upper Manhattan, but the entry of a Democratic Socialist candidate supported by the city's top executive changes the dynamic of the race. The endorsement is viewed by some as a demonstration of Mamdani's political influence within the city's Democratic electorate.
While some reports indicated the mayor was merely considering the move, other accounts confirmed the endorsement was finalized on May 28 [1]. The race will now center on whether the progressive surge can unseat a long-term incumbent in the final weeks before the vote.
“Mamdani is signaling a preference for more progressive representation in the district.”
This endorsement highlights an intensifying ideological divide within the New York City Democratic party. By breaking a previous pledge to support an incumbent to back a Democratic Socialist, Mayor Mamdani is attempting to consolidate the progressive left and challenge the influence of established political donors and organizations like AIPAC in congressional races.
