The scoreboard from New York’s Tuesday primaries reads like a power map redrawn overnight. All three congressional candidates backed by Mayor Zohran Mamdani won: democratic socialists Claire Valdez in the 7th District and Darializa Avila Chevalier in the 13th, and his onetime mayoral rival Brad Lander in the 10th, in a midterm cycle where Democrats have a live shot at taking back the House. A year after the 34-year-old mayor’s upset defeat of former Governor Andrew Cuomo, the contests were read citywide as a test of his political clout, and the result leaves little ambiguity. “A year ago, it was not the end of a political movement. It was the beginning,” Mamdani told a victory party for Valdez and the down-ballot socialists who won with her.
The two House takeovers were the substance of the shift. Chevalier, a Harlem-based organizer, doctoral student and veteran of the Columbia University encampments for Palestine, beat 71-year-old Representative Adriano Espaillat in a working-class 13th District reaching from Harlem and Upper Manhattan into the Bronx, attacking his corporate donor ties and his pro-Israel allies, AIPAC among them, while he hammered her refusal to commit to backing Hakeem Jeffries for speaker; she also spent the campaign’s final weeks apologizing for now-deleted tweets, including a 2021 post about Kamala Harris. Espaillat, the chamber’s first Dominican-American member and its first formerly undocumented one, made the generational cut all the starker. Valdez, a former Columbia clerical-workers organizer and United Auto Workers labor organizer now in the state Assembly, got past Council Member Julie Won and Brooklyn Borough President Antonio Reynoso for the seat of the retiring Nydia Velázquez, who served three decades; the district’s young, progressive, college-educated stretch of Queens and northern Brooklyn was nicknamed the “Commie Corridor” and powered Mamdani’s own mayoral win.
The civil-war mechanics matter more than the margins. The race split the city’s left down the middle: the Working Families Party of New York, several prominent labor unions and Velázquez herself all lined up behind Reynoso, while Mamdani, Senator Bernie Sanders and the city’s Democratic Socialists of America endorsed Valdez, forcing the WFP into the unfamiliar posture of siding with the establishment it has spent decades fighting. Its co-state director Jasmine Gripper defended the record, from the $15 minimum wage to pre-K expansion to helping beat Cuomo, and framed the future as tandem work with DSA rather than competition. Representative Alexandria Ocasio-Cortez, a potential 2028 presidential candidate, kept her endorsement out of the hottest House races, declining to back Mamdani’s candidates there, a silence critics condemned and others read as the congresswoman and the mayor dividing their clout between federal and state contests. The state results extended the pattern regardless: State Senator Jabari Brisport held his seat and the challenger Eon Huntley took down an Assembly incumbent, both endorsed by WFP and DSA.
The money war preceded all of it, and the left won it from behind. A collective $8.4 million from special interests, the pro-Israel lobby among them along with dark-money outfits, went into the three races against Mamdani’s endorsed candidates, while the progressive side dug deeper than it had in years: the new pro-Palestine super PAC American Priorities put in $2 million, Justice Democrats spent a combined $1.8 million, and total progressive spending reached $1.3 million behind Valdez and $2.9 million behind Chevalier. Lander’s defeat of Representative Dan Goldman, born into the Levi Strauss fortune, was called within 10 minutes of the polls closing; the incumbent had trailed in public polling for months. NYC DSA co-chair Gustavo Gordillo drew the operational lesson: “Even when we are outspent, our agenda and operation bring out voters in a way the Democratic Party establishment no longer aspires to.”
The broader stakes run past the city line. Strategically, what the night established is that the socialist left now sets the terrain of New York Democratic politics and forces everyone else to campaign on its ground, a fact acknowledged with varying degrees of grace; Pennsylvania Senator John Fetterman put it to CNN in five words: “The dirtbag left is surging.” Lander, the bridge candidate between socialists and progressives, closed his own race with the line history may keep: “It’s fighters versus folders.” November supplies the audit: the Democrats’ House majority math runs through seats like the Hudson Valley 17th, where Army veteran Cait Conley won the primary to face Republican Mike Lawler in one of just three GOP-held districts that voted for Harris in 2024, while Manhattan’s 12th went to Assembly Member Micah Lasher in the crowded race to succeed Jerry Nadler. The message from Mamdani’s city, in his own words, is that “the old politics that got us into this crisis is not gonna get out of this crisis.” The party’s establishment now has to price that in.
Sources
- New York primary results: Valdez, Chevalier win House primaries
- Socialists Are Setting the Agenda in New York City
