Zohran Mamdani’s reach in New York City Democratic politics was on full display Tuesday, when three congressional candidates he endorsed won their primary elections. Brad Lander beat Dan Goldman comfortably, Claire Valdez defeated Antonio Reynoso in New York’s 7th district and Darializa Avila Chevalier toppled Adriano Espaillat in New York’s 13th congressional district.
For Mamdani, the results were a clean return on the political capital he spent earlier this year backing the three left-wing allies. He threw himself into the House primaries and helped turn races that looked competitive into wins that were decided on the first count. Lander captured the moment with a line that fit the mood of the night: “What a glorious time to be a New Yorker.”
The victories matter because they were not isolated local wins. They landed on a Tuesday when voters across New York, Maryland, Utah and South Carolina were also casting ballots in primaries and runoffs, and they strengthened the case that Mamdani has become a real force inside the city’s Democratic ranks. The three winners were described as all but certain to be elected to Congress in the November midterm election, which would turn Tuesday’s endorsements into actual power in Washington.
There was also a limit to how far that political wave could reach. Jack Schlossberg, 33 and the grandson of John F Kennedy, entered the race to replace Jerry Nadler with national name recognition and a relentless social media presence, but that did not carry him into the next round. In a field where attention was not enough, he failed to advance in Manhattan even as the rest of the night tilted toward Mamdani’s choices.
The clearest test of the moment may now be how durable this influence proves to be. Micah Lasher won the primary in New York’s 12th district and is the heavy favorite in a safely Democratic seat, but the bigger question is not whether Mamdani can help allies win one election. It is whether these wins mark the start of a broader shift in New York City Democratic politics, where endorsement power is beginning to look less symbolic and more decisive.
Donald Trump noticed the defeats on social media late Tuesday night, celebrating Goldman’s loss and taking aim at George Conway with the kind of insults he reserves for political enemies. That reaction only sharpened the meaning of the night: Mamdani’s camp won on the ground, while his opponents were left shouting online.
