Organized labor used to have a simple rule in New York politics. You back the progressive who fights for working-class programs, or you stick with the reliable incumbent who keeps the gears turning. But Brad Lander's aggressive primary campaign to unseat Representative Dan Goldman in New York’s 10th Congressional District has completely shattered that playbook.
It is a political civil war. This race isn't just about a safe Democratic seat covering lower Manhattan and brownstone Brooklyn. It has turned into a high-stakes proxy battle that exposes a deep fracture within the labor movement itself.
On one side, you have powerful building trades unions and municipal giants like District Council 37 standing shoulder-to-shoulder with Dan Goldman and Governor Kathy Hochul. On the other side, progressive service unions like 32BJ SEIU are throwing their weight behind Lander.
If you think labor always moves as a monolith, this race proves you wrong.
The Fight Over 485x and Housing Money
To understand why working-class unions are furious with Lander, you have to look at his record as New York City Comptroller. For years, Lander used his office as a policy bully pulpit. That meant auditing city programs, checking the math on state tax incentives, and calling out what he saw as corporate giveaways.
The biggest flashpoint is a state housing tax incentive program known as 485x.
The building trades unions fought hard for 485x because it includes wage floors for construction workers on major residential developments. They saw it as a victory for union jobs. Lander saw it as a massive loophole. His office slammed the program, arguing it failed to produce actual affordable housing while giving developers a pass.
That critique didn't sit well with the carpenters and laborers. For them, Lander’s policy purism threatens their actual paychecks. It’s a classic divide: a progressive official fighting for abstract systemic affordability versus union leadership fighting for concrete, immediate wages for their members.
Audits as Political Weapons
The tension goes beyond housing. In his final days as comptroller, Lander released a highly critical audit of a major union-run healthcare fund, essentially declaring it insolvent.
While Lander’s team framed the audit as necessary fiscal oversight, union leaders saw it as a direct betrayal. You don’t audit your friends and broadcast their financial vulnerabilities right before a major election cycle.
Dan Goldman has capitalized heavily on this resentment. Armed with a massive personal fortune and deep establishment backing, Goldman has positioned himself as the adult in the room—someone who protects union stability rather than picking ideological fights.
NY-10 Primary Financial Snapshot (As of June 2026)
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Daniel Goldman: $7,809,407 raised | $1,549,186 cash on hand
Brad Lander: $2,249,342 raised | $493,275 cash on hand
Goldman's fundraising is massive, but Lander’s campaign is built on a completely different model. Lander pulled in small-dollar donations from over 11,000 individual donors, with the vast majority coming in at under $100. It's a classic grassroots insurgency testing the limits of institutional labor power.
The Shifting Progressive Coalition
What makes this split so fascinating is that Lander isn't isolated. While municipal and construction unions view him as a threat, service-sector unions and national progressive stars see him as the future of the party.
Senator Bernie Sanders, Senator Elizabeth Warren, Representative Alexandria Ocasio-Cortez, and NYC Mayor Zohran Mamdani have all lined up behind Lander. This faction views Goldman as a "corporate Democrat" who represents wealthy special interests rather than the working class. Lander has been fiercely critical of Goldman's stance on foreign policy and his past self-funding, arguing that Goldman simply doesn't understand the economic anxieties of regular New Yorkers.
This has left rank-and-file union members caught in the middle. Do they vote for the incumbent who has the governor's ear and protects their specific project funding? Or do they vote for the progressive outsider who promises to fight for broader systemic changes like Medicare for All and aggressive tenant protections?
What This Means for Future Primaries
The old political math in New York is dead. A union endorsement no longer guarantees a unified block of voters, and attacking a candidate's labor record is no longer a third rail if you have a strong enough grassroots base.
If Lander's small-dollar machine overrides the institutional weight of DC37 and the building trades, it will send shockwaves through local politics. It will prove that a progressive candidate can actively feud with major labor institutions and still win by mobilizing tenant advocates, climate activists, and service workers.
For union leadership, the immediate next step is clear. They have to prove they can still deliver votes for their preferred candidates, or risk losing their leverage entirely in future legislative fights. If you are watching New York politics, ignore the standard party rhetoric. Watch where the union money and foot soldiers go, because that is where the real power is shifting.
NYC unions choose sides in NY-10 primary
This video report highlights the specific policy disputes, including the 485x housing program, that caused New York City's powerful labor unions to split their support between the two Democratic candidates.
