The Political Aftermath of the Democratic Primaries

Zohran Mamdani wasn’t even on that ballot for the New York Democratic congressional primaries. It felt almost absurd, doesn't it?

Yet by the time the dust settled, by the end of that whole night, the city’s mayor had somehow managed to become the most consequential winner there was. It’s a strange way to look at politics sometimes. Not about who actually signed up for the race, but who ends up holding the strings afterward.

All three candidates Mamdani backed? They all won their races. Brad Lander took down Dan Goldman. Claire Valdez beat Antonio Reynoso for that open House seat. And Darializa Avila Chevalier pulled off what felt like the biggest upset of the night: unseating veteran Congressman Adriano Espaillat. It was a real shockwave going through things.

The districts themselves, though they strongly favored Democrats. That gave the primary winners a clear shot at Congress after the November midterms. The math seemed to point that way. A solid pathway, maybe? But pathways are rarely straight lines, especially in this city.

Mamdani got a clean sweep, of course. That’s what they saw. And it strengthened something important. It reinforced the idea that his surprise win against Andrew Cuomo last year wasn't some fluke. It wasn't just a one-off political shock. Something deeper was happening beneath the surface. His campaign organization, how he got the endorsements, the actual ideological appeal it all seemed to work. It appeared capable of getting other people to actually win elections now.

“We are showing that last June,” Mamdani said, and you could feel the weight in his voice, “a year ago tomorrow, was not an anomaly. It was not the end. It was the beginning.” That line hung there. A kind of quiet certainty mixed with something almost defiant. The start of something bigger.

So what actually happened in those three races? That’s where things got messy. Not a simple sequence. It was all tangled up.

The most intense fight, the one everyone was watching, that was Lower Manhattan and Brooklyn. Brad Lander versus Dan Goldman. That race felt like it carried the most weight, didn't it? A real clash of personalities right there on the line.

Lander ran to Goldman’s left, obviously. But it wasn't just about geography. It got into something bigger. Mamdani and his crew were attacking the congressman over his support for Israel. That was a flashpoint. Goldman had refused to endorse Mamdani after he won the mayoral primary because of those views on Israel. Even though Mamdani performed so strongly in Goldman’s district, that rift remained. A real sticking point.

Then came the pivot. Mamdani threw his weight behind Lander. It wasn't just a polite gesture. He campaigned hard for him. You could see it. He was there right after the voting ended, celebrating what turned out to be a decisive victory. That kind of visible support changes things in politics. It’s not abstract; it’s physical.

Next up was the second race. This one dealt with Brooklyn and Queens territory, where Representative Nydia Velázquez had vacated her seat. Mamdani backed Claire Valdez. She’s a first-term state assemblywoman. And she came in as a clear voice for democratic socialism. She ran against Antonio Reynoso, the Brooklyn borough president.

Reynoso seemed to have some real advantages here. He had those deep roots. The history of the district felt heavy there. Progressive record. Support from Velázquez herself. Plus, he’d been considered an ally of Mamdani before. It made the contest interesting.

But Valdez turned it into something else entirely. A fight about where the left was going next in the city. Reynoso drew support from those older residents. The established folks. But Valdez? She connected with the newer voters. Those people in the gentrifying neighborhoods, the ones shifting things around. It became a battle over who represented that evolving landscape.

Mamdani stepping in there gave Valdez more visibility. It helped frame it as a choice: you had the established progressive versus the newer socialist movement taking hold. That framing mattered a lot.

And then there was the third result. This one just hit differently. Darializa Avila Chevalier, an activist, democratic socialist someone who volunteered for Mamdani’s campaign she defeated Adriano Espaillat. Espaillat. A veteran. Someone who had spent two decades trying to get into Congress. Ten years serving there before that was.

That defeat felt huge. It was arguably New York’s biggest House primary upset since Alexandria Ocasio-Cortez took down Joe Crowley back in '18. The significance of Espaillat being unseated, especially given his role as chairman of the Congressional Hispanic Caucus, it amplified the whole thing. A real seismic shift.

Mamdani and his allies had been making noise about Espaillat. Accusations that he was too close to corporate interests. Too supportive of Israel. Those things hung over him.

Goldman, before the results were even finalized, made a pointed comment. He accused Mamdani of focusing way too much on the Middle East. Creating an “increasingly toxic environment,” especially for Jews. It brought that tension right into the political theater.

It really exposed the fault lines. How does that external pressure the war in Gaza, US support for Israel get filtered into local primaries? The whole dynamic was being tested there.

But this exposure didn't just cause friction within Mamdani’s camp. It also deepened some real difficulties. He faced criticism from sections of the Jewish community. Accusations surfaced about him describing groups like the American Israel Public Affairs Committee as political “monsters.” And then, the worry that he was invoking antisemitic tropes. That kind of backlash hits you where it hurts most when you’re trying to build a coalition.

Velázquez had backed Mamdani during his mayoral run. A relationship existed there. But after the endorsements came Valdez instead of Reynoso that connection frayed fast. She felt he missed something fundamental.

She said he made a strategic error of judgment. Not seeing how important it is to maintain ties across all levels: city, state, federal. It’s about expanding your tent, not shrinking it because you need help everywhere else. That was her frustration laid bare.

And Letitia James, the Attorney General another big supporter during his mayoral run she also spoke out. She criticized some of his choices too. She felt certain candidates simply didn't grasp the history. The cultural differences. The racial and class dynamics that defined those specific districts they were trying to represent. It was about understanding the ground you’re standing on.

“All of us are a little frustrated with the Democratic Party,” James said. “But you don’t blow it up. That’s what MAGA has done.” A sharp, almost weary observation about where things actually went wrong politically.

So, right now, the message is still unfolding. Mamdani’s mayoral victory wasn't some isolated fluke. It felt more like the starting point for something much larger. The next thing everyone will be watching is whether that project can grow. Can it expand without leaving him stranded inside his own party? That remains the big question hanging over everything.