DSA-backed challengers – All three New York congressional hopefuls endorsed by New York City Mayor Zohran Mamadani won their primaries Tuesday—an outcome framed as a populist takeover by the left and a referendum on Mamdani’s power. The results toppled long-time Democratic figures and
On Tuesday night, the left didn’t just win—New York’s primaries turned into a test of who controls the Democratic Party’s next chapter, and the answer landed fast.
All three congressional candidates endorsed by New York City Mayor Zohran Mamadani won their primaries on Tuesday. The races. widely viewed as a referendum on Mamdani’s influence as a kingmaker. quickly sharpened into a broader question: how much power does the left now hold when it comes time to choose the party’s standard-bearers?.
In one of the night’s most striking upsets, Darializa Avila Chevalier defeated five-term incumbent Rep. Adriano Espaillat in a primary for Congress. Chevalier—described as an organizer of the Columbia pro-Palestine protest alongside Mahmoud Khalil—cited Espaillat’s refusal to help Khalil after his arrest as a central reason she decided to challenge him.
That political biography, and the way it collided with national debate, became impossible to ignore. Chevalier came onto the national stage after writing an op-ed in support of Khalil and being recruited by Justice Democrats.
The contrast between her opponents and the message she carried fueled some of the harshest reactions to her victory. Avila Chevalier’s win is tied to a charge that the Democratic Socialists of America is reshaping the party through Ivy League transplants who. critics say. don’t reflect working-class interests. Liberal and conservative critics of the DSA framed her success through that lens—arguing that new left leadership is coming at the expense of older Democratic structures.
The labor-and-party establishment didn’t escape the blow. The night also included a competition for Nydia Velázquez’s seat. Velázquez was retiring, and she had chosen Brooklyn Borough President Antonio Reynoso as her successor. Yet the primary became a clash over progressive power—one that featured DSA-linked organizing and supporters questioning whether the party’s traditional progressives were being betrayed.
The third major result on Tuesday featured Brad Lander, who beat incumbent Rep. Dan Goldman in lower Manhattan and parts of Brooklyn. Lange said he’d expected the race to be competitive. but the speed with which the result came in “less than 10 minutes after the polls closed” added another layer of pressure for establishment Democrats who had stood by Goldman.
In the aftermath. Democratic Party leaders and Republicans spun the results as evidence that Hakeem Jeffries had lost control of the party. Jeffries. the House Minority Leader. had received a public gesture from Republicans’ House campaign arm on Wednesday morning—a card and flowers offering condolences after “candidates that he endorsed lost to socialists on Tuesday night in primaries in New York.” The card read: “Three losses in one night is tough. We wanted so-called ‘Leader. ’ — in quotes — ‘Jeffries to know our thoughts are with him. his candidates. and whatever remains of his influence in the Democratic Party.’”.
The establishment’s response wasn’t only coming from the right. In comments on Wednesday morning, Rep. Greg Meeks in Queens implied that New York City would suffer and receive fewer federal resources because it lost “one of its really powerful incumbents.”
What made the losses land so sharply for old-guard Democrats was how the campaigns were described—as not just political contests, but cultural and organizing fights.
Michael Lange. a political writer and elections analyst. argued the key variable was Mamdani himself—pairing a “broad cultural political figure” with “block-by-block organizing” associated with New York City DSA. He described Avila Chevalier’s win over Espaillat as a distillation of a “Democratic tea party. ” pointing to her victory even after a candidate message that he characterized as “Fuck Kamala Harris.”.
Lange also connected the night’s outcomes to demographic pressures on the Democratic Party’s base. He said the party is becoming younger. more educated. and “increasingly squeezed financially. ” with “broad alienation” among people who haven’t been able to get ahead. In his view. those pressures feed an “affordability zeitgeist” that could shape future primary contests—posing a question of what it could look like in a Democratic presidential primary “two years” from now.
One detail kept surfacing through the conversation: money—and what it can no longer buy. Lange said the value of spending appears to be diminishing. even as the cycle was among the most expensive in New York. He pointed to spending reported as totaling more than $50 million across the handful of congressional races that were up.
He also referenced a report on Wednesday from New York Focus. saying super PACs spent almost five times what they spent on state legislative races in 2024. In total. $9.6 million was spent. including more than $2.5 million spent against DSA candidates alone. “almost every single one of whom won their races.”.
Still, the spending didn’t translate cleanly into control. Lange said Avila Chevalier was spent “three or four to one. ” which he argued wasn’t a ratio that could truly break a campaign. He said the downballot super PAC spending “largely flopped. ” and he credited New York City DSA. as well as Mayor Mamdani. with focusing on engagement and turnout in the districts.
In the account of how power was built on the ground. DSA was described as doing the work that tipped outcomes at the margins. Lange said New York City DSA knocked on more than 300. 000 doors in the run-up to the vote and “knocked the entire district. ” language meant to convey the intensity of the effort.
He connected that strategy directly to the 7th Congressional District. where Claire Valdez faced Antonio Reynoso for Nydia Velázquez’s seat. Lange described the race as having a “prime opportunity district” dynamic early on. while also citing a crucial vote bloc: a large Orthodox Jewish community identified as Satmar of South Williamsburg. He said these voters. though anti-Zionist. have long known Reynoso and that their vote is directed according to rabbinical leaders. with Reynoso said to have started with “10 percent of the electorate” giving him “close to 100 percent of the vote.”.
In that framing. Valdez was still able to engineer enough young voter turnout—especially in a lower-turnout congressional primary—to win decisively. Lange said voters under 50 supported her “pretty substantially. ” and he pointed to neighborhoods where Valdez matched margins Mamdani had previously achieved versus Andrew Cuomo. He described Valdez as winning by 3 points and suggested a younger voting base than the prior year.
The night did not just reshape congressional primaries; it also reopened fights inside the left. Lange outlined the differences between the Democratic Socialists of America and the Working Families Party. tracing them to ideology and organizational structure. In his account. DSA is “member-driven” and pushes a class-focused politics. with strong emphasis on Palestine and related issues after October 7. He contrasted that with what he said is the Working Families Party’s more top-down endorsement process. and he described what he saw as a more identitarian bent within WFP.
In the middle of all that, Mamdani’s name kept returning as the lever that moved events. Lange portrayed Tuesday’s results in the 7th District as effectively a referendum on Mamdani’s power—and he described an internal struggle that started before the campaigns were fully set.
He said DSA leadership and rank-and-file in New York City wanted to support Claire Valdez early. even describing her as a union organizer with goodwill among members. But the shift came when Congresswoman Nydia Velázquez—retiring—was described as having appetite for supporting another DSA candidate she was more familiar with. Antonio Reynoso. and he said Velázquez “did not want to support Claire” and then “went all in on Antonio Reynoso.”.
Lange said that decision became bitter, tied to media sparring, and—looking back—he suggested that the Working Families Party and Reynoso camp may have raised the stakes too high. The reason, he argued, was that Mamdani is not only political power in certain parts of the city but a cultural figure.
Cheered as a builder of an electorate through organizing and turnout, that cultural effect was described as personal and visible: Lange said people in parts of Green Point or Bushwick have run out to get pictures with Mamdani and that he did a selfie line at McCarren Park.
Where the conversation turned darkest was when the establishment narrative—that these results are an ocean-wide coastal phenomenon—met the idea that the party’s direction is changing anyway.
Asked whether New York’s “commie corridor” politics could work outside the city and the coasts. Lange said the Democratic Party is becoming younger. more educated. and financially squeezed. with Gen X suburban voters showing up for change when mortgages and affordability pressures hit. He said technology’s influence. and broader cultural alienation tied to “the loss of community” and “oligarchy. ” are driving the shift—and that affordability could become the central issue as the next cycle develops.
He also described a sharp mismatch in messaging and attention between different issues. He said Claire Valdez and Darializa Avila Chevalier ran hard on Palestine and AIPAC alongside ICE-related themes. and he argued that in these districts. those issues were not electoral poison. In his view. the broader Democratic Party is starting to copy Mamdani’s affordability message “almost verbatim. ” while the races in New York 7 and New York 13 were motivating in a way that didn’t match centrist assumptions about what the working-class base wants.
The night’s story has also raised a more personal question for activists: where was Alexandria Ocasio-Cortez in the congressional races?. Lange acknowledged that she supported four state assembly members challenging incumbents, and that those candidates won. He said the strategy wasn’t a neglect so much as an outcome of relationships and institutions—contrasting Mamdani’s and AOC’s different political leverage.
Lange described Mamdani as not endorsing insurgent challengers in the state legislature in an effort to avoid pissing off Assembly Speaker Carl Heastie, while describing a “reverse” pattern in Congress where the chips were pushed differently.
Even within this new wave, not everyone won. Lange said Conrad Blackburn was the only DSA candidate to lose among those discussed. He added that Blackburn’s loss was partly because he was the only candidate without a Mamdani or AOC endorsement. Lange also discussed campaign pressures and timing. including that Blackburn had an internship when he was in Florida as a law student under Pam Bondi. which he said hurt him early before he “claw[ed] back.”.
Still, the dominant takeaway across Tuesday’s primaries was clear in the results and in the way they were interpreted: Mamdani’s endorsements didn’t just succeed. They succeeded in a way that left both Republicans and establishment Democrats scrambling for an explanation.
For critics of the old guard, the conclusion is simple: “Democratic tea party” or communist takeover—call it what you want—the party is shifting from the left, and New York’s primaries offered proof that it can happen without waiting for permission.
Lange’s final version of the night put it in blunt political terms: he said a candidate who told voters to say “Fuck Kamala Harris” won in what he called the “historic capital of Black America.” For him, that was a “distillation” of a real anti-establishment demand inside the Democratic coalition.
And for Democrats trying to interpret the stakes, the message was already written in the arithmetic of what happened next—three wins in one night, and the kind of speed that tells you this is not fading.
New York primaries Zohran Mamdani Democratic Socialists of America DSA Claire Valdez Brad Lander Darializa Avila Chevalier Adriano Espaillat Dan Goldman Hakeem Jeffries Working Families Party Alexandria Ocasio-Cortez