Zohran Mamdani did not spend the final weeks before the primaries playing polite host to New York’s political establishment. He treated the New York primary results as a test of power, not etiquette, and backed challengers in races many local Democrats had assumed were settled. That went exactly how you’d expect.
By Tuesday night, the gamble had paid off. Two Mamdani-backed candidates defeated establishment favorites, and a third ally won another congressional primary. In a city where a Democratic primary often functions as the real election, that is not a symbolic evening. It is a personnel change.
The consequences reach beyond Albany Avenue, Broadway, and the rooms where nervous consultants are gaming this out. The results will matter to progressive organizers, Democratic moderates, Big Tech, Hollywood unions watching artificial intelligence policy, and candidates in other cities hoping New York just provided a usable script.
Why Mamdani’s endorsements mattered
Mamdani’s move was unusual because he did not simply support safe allies or wait for incumbents to retire in peace. In several races, he chose the Democratic Socialists of America lane over the traditional Democratic one, even when that meant angering Latino leaders and longtime power brokers who expected deference.
The strategy was helped by the energy around left-wing livestreamer Hasan Piker, whose audience and appearances gave the campaigns a visible online and offline push. In the old model, candidates sought union halls, local clubs, and newspaper endorsements. Now, a livestream can sit alongside a rally stage and still count as field work. Democracy is adaptable, just not always pretty.
Mamdani’s choices turned races viewed as easy wins into contests between progressive Democrats, democratic socialists, and candidates backed by the city’s older political machines. The results suggest his coalition can do more than win one mayoral race. It can also reshape the bench around him.
How Claire Valdez beat the chosen successor in District 7
The first major shock came in Congressional District 7, which covers Williamsburg, Greenpoint, Ridgewood, and other parts of Brooklyn and Queens. Nydia Velázquez, the first Puerto Rican woman elected to Congress and a major figure in New York politics, announced around Thanksgiving that she would retire after 32 years.
Velázquez had supported Mamdani during his mayoral campaign, helping him with Puerto Rican voters. When she decided to step aside, she backed Antonio Reynoso, the Brooklyn borough president, as her preferred successor. Reynoso is a progressive, but he was also the establishment choice in this particular drama.
Mamdani went another way. He endorsed Claire Valdez, a thirtysomething State Assembly member who was born in Texas, is also a citizen of the Ysleta del Sur Pueblo Nation, and came to politics through activism after attending the School of the Art Institute of Chicago.
The race became a direct test of Mamdani’s organizing strength against Velázquez’s long-standing influence. Polling suggested Valdez and Reynoso were close. The final count did not. Valdez won by about 20 points, a clear defeat for the legacy candidate and a clear message that Mamdani’s endorsement can do more than generate posts.
Why Darializa Avila Chevalier’s upset was even bigger
The second major result came from Congressional District 13, covering northern Manhattan, including Harlem and Washington Heights, and parts of the Bronx. This is a district with deep institutional memory. Charles Rangel represented the area for more than 45 years, surviving even after an ethics scandal in 2010 and holding on for three more terms. His chosen successor, Adriano Espaillat, became the first Dominican-American elected to Congress.
Espaillat was seeking a sixth term, and until recently he looked secure. Mamdani had even said he would endorse him. Then he shifted to Darializa Avila Chevalier, a 32-year-old organizer and daughter of Dominican immigrants who had never held elected office.
Chevalier helped lead the 2024 pro-Palestine encampment protests at Columbia University, where she had once studied. She also reportedly attended a controversial pro-Palestine rally in Times Square on October 8, 2023. Those details made her candidacy a nationalized argument almost immediately, which is what local politics does now when it wants to get messy.
Her Dominican identity also became a flashpoint. On primary day, she walked out of an interview with La Mega during a tense exchange about why she did not include the Dominican flag in her social media bio. She described Dominican nationalism as “violent.” Whether that moment hurt or helped with voters is unclear, but it certainly ensured the race would not end quietly.
How rallies, livestreams, and celebrity stages shaped the left’s night
Chevalier’s campaign benefited from a growing progressive media and rally circuit. Two weeks before the vote, she appeared with Hasan Piker and Claire Valdez at a Bushwick club after Piker came in from Los Angeles to campaign. The event connected online left politics with New York’s in-person organizing culture, which is increasingly less of a divide and more of a revolving door.
Another major rally took place the Thursday before the primary at Kings Theatre in Brooklyn. Mamdani appeared with his three preferred congressional candidates: Chevalier, Valdez, and Brad Lander, the former New York City comptroller and former mayoral rival. Sara Bareilles performed, giving the night a dose of entertainment-world polish without turning it into a gala, which would have been ideologically awkward and logistically expensive.
On Tuesday, Chevalier defeated Espaillat by roughly three points, or about 2,000 votes, with 90% of the total counted. If she wins in November, as the district’s Democratic lean suggests she is likely to do, she will enter Congress as a major progressive lightning rod.
The comparison to Alexandria Ocasio-Cortez is hard to miss: a young insurgent beating an entrenched Democratic incumbent in a Trump-era cycle. Chevalier will not arrive quietly.
What the new progressive map could look like
Chevalier and Valdez will be joined by Brad Lander, who defeated incumbent Dan Goldman in Congressional District 10, covering downtown Manhattan and heavily gentrified parts of Brooklyn. Lander is not officially a member of the Democratic Socialists of America, but he is aligned with Mamdani and will likely vote with the left on many major issues.
Valdez and Lander are part of what some have called the “Commie Corridor,” a label used with either affection or alarm, depending on the speaker and their tolerance for rent-stabilized irony. The corridor runs from northwestern Brooklyn through parts of the borough and into western Queens, areas with large populations of young progressive voters.
Chevalier adds a northern Manhattan point to that map. Together, the results create a visible left flank inside New York’s congressional delegation, one that could influence debates on housing, labor, immigration, foreign policy, and technology.
The national question is whether this is a temporary Trump-era surge or a more durable realignment. Progressive waves have risen before, and some of their best-known members, including Jamal Bowman and Cori Bush, later lost their seats. Mamdani’s side now has to prove this was not just an exceptional night, but the start of a governing bloc.
Why the Manhattan AI race mattered to Hollywood
Congressional District 12, running through much of Manhattan from 14th Street to 96th Street, was different from the left-insurgent races. This district includes Broadway, Madison Square Garden, 30 Rock, Lincoln Center, and a dense concentration of media and entertainment companies. It did not feature a far-left challenger. It featured center-left Democrats arguing with other center-left Democrats, which is still politics, technically.
The headline names were Jack Schlossberg and George Conway, both prominent on social media and both weak in the polling. The real contest was between Alex Bores and Micah Lasher.
Bores, 35, is a tech veteran, engineer, and State Assembly member. Lasher, 44, is a longtime political operative who worked for Michael Bloomberg and former New York State Attorney General Eric Schneiderman, and also served in the State Assembly. Retiring Representative Jerry Nadler backed Lasher. Former Representative Carolyn Maloney backed Bores.
The race turned into a fight over artificial intelligence regulation. Bores sponsored New York’s RAISE Act, which would require AI companies, among other things, to publish and enforce safety plans. That made him a target for Big Tech money.
How Big Tech tried to stop Alex Bores
Leading the Future, a super PAC funded by figures including OpenAI president Greg Brockman, Palantir co-founder Joe Lonsdale, and venture capitalist Marc Andreessen, spent heavily against Bores. The ads attacked him in ways that critics said distorted his record, including by emphasizing his past work at Palantir.
Bores framed the spending as a warning shot from the technology industry. “I didn’t get in this race to make a point about AI but some of the most powerful people on the planet, a handful of oligarchs hellbent on preventing any regulation of this industry….decided to make an example of this race,” he said Tuesday.
He also delivered a line likely to land with Hollywood guilds, writers, actors, visual effects workers, and other entertainment professionals who have watched AI move from abstract threat to contract-table issue: “Americans everywhere are seeing AI work its way into every aspect of their lives and their economy and they’re looking to see who will stand up for them.”
Bores built an unusual coalition. Moderates liked parts of his foreign policy. Progressives liked his AI stance. Gun-control advocate and former rival Cameron Kasky summed it up with some bite: “You could make a sitcom.” Composer Benj Pasek endorsed him, and Anthropic, seen as more safety-focused than some competitors, also backed him against the OpenAI-linked spending.
Why Micah Lasher’s win does not end the AI fight
Despite that coalition, Lasher defeated Bores by about four points, or roughly 4,000 votes, with 90% of the vote counted. Schlossberg finished far behind, with about 11,000 total votes, roughly 25,000 behind Bores.
Bores used his concession speech to argue that the AI regulation fight would continue. “Future wins will build on what this campaign started. That’s how movements work,” he said.
Lasher is expected to be more centrist than Bores on several issues, but he made a point of distancing himself from the tech companies that intervened in the race. “I have some news for the two big AI companies that took such an unusual interest in this race,” he said in his victory speech. “I won’t be taking cues from either of you.”
For the entertainment industry, the lesson is not that AI regulation lost. It is that AI policy has become a campaign issue in one of the most media-saturated districts in the country. Hollywood has been asking who in Washington will take the matter seriously. The answer is still forming, but the question is now very public.
How Anthony Constantino turned stickers into a nomination
The strangest result came far from the city, in Congressional District 21, which stretches through upstate New York, including Plattsburgh and the Adirondacks, to the Canadian border. This is Elise Stefanik’s territory, and Republicans were choosing a nominee to replace her.
The establishment backed Robert Smullen, a State Assembly member and former Marine colonel. He faced Anthony Constantino, a former boxer and the founder of Sticker Mule, a custom printing company. Constantino was not a conventional political figure before 2024, when he placed a 100-foot red illuminated “Vote for Trump” sign over his company’s office in Amsterdam, New York.
City officials said the sign had not been approved and could distract drivers. Constantino argued it was protected speech and said, “I spent my day, to my surprise, talking to friends and family and UFC superstars asking what to do.” Donald Trump noticed and endorsed him.
The primary became brutal. Constantino called Smullen evil in a text. Smullen called Constantino a Democrat. By Tuesday night, Constantino had defeated Smullen by about 20 points. There were also 216 write-in votes, a small democratic mystery probably best left sealed.
Constantino now advances to face Democrat Blake Gendebien, a dairy farmer. This race already feels like a documentary before it feels like a congressional contest.
What the night means beyond New York
The downstate Democratic results will echo into other cities, including Los Angeles, where progressives such as Nithya Raman may see encouragement in New York’s leftward surge. Mamdani has shown that a mayor can use political capital aggressively, even against traditional allies, and win.
That does not mean the model is easily copied. New York’s districts have specific histories, demographics, and media ecosystems. Valdez, Chevalier, and Lander each benefited from local frustrations as much as from national progressive energy. Still, the message to Democratic incumbents is clear enough: being next in line is no longer a complete campaign plan.
For Hollywood and the broader entertainment business, the Manhattan AI race may be the most practical warning. Big Tech is willing to spend heavily in Democratic primaries to shape future regulation, and candidates are willing to campaign against that influence. The fight over creative labor, data, consent, and automation will not stay inside guild negotiations.
The larger question is whether Mamdani’s coalition is a lasting shift or just a Trump-era reaction that will fade when the weather turns. Tuesday did not answer that. It did, however, make the next chapter harder for the old guard to ignore.
