Congressional candidate Brad Lander with New York City Mayor Zohran Mamdani on June 14. Photo by Jacob Kornbluh

By Jacob Kornbluh June 15, 2026

A voter canvass rally for Brad Lander in Brooklyn’s Carroll Park on Sunday looked, in many ways, like the kind of gathering that helped propel New York City Mayor Zohran Mamdani to power.

There were chants of “Free Palestine.” There was a speech by a prominent Columbia University protest leader. Speakers denounced the war in Gaza as a genocide and called for an end to U.S. military aid to Israel. And there was a repeated emphasis on building a political movement rooted in solidarity between Jewish and Muslim New Yorkers.

The difference was the candidate at the center of it all.

Lander, the former city comptroller who is challenging incumbent Rep. Dan Goldman in the June 23 Democratic primary for New York’s 10th Congressional District, is a self-described liberal Zionist who continues to support Israel’s existence as a Jewish and democratic state and does not identify with the boycott, divestment and sanctions movement against Israel. During his time as comptroller, the city’s pension funds acquired holdings in Elbit Systems, Israel’s largest defense contractor, and touted it during an appearance on an Orthodox radio program.

Yet he has emerged as the highest-profile Jewish elected official in New York on the strength of progressive support. While he was already well known as a Brooklyn City Council member and then mayoral candidate, and gained further attention after getting arrested at a Manhattan ICE court last year, it is his positions on Israel that have come to define his campaign. Lander is embracing much of the language and policy agenda of the pro-Palestinian movement, including describing Israel’s conduct in Gaza as genocide and pledging to oppose additional U.S. military aid while the Israeli-Palestinian conflict continues.

Recent polling has shown Goldman trailing Lander.

Between Zionists and anti-Zionists

Over a plate of crispy potato latkes topped with an over-easy egg at Mile End Delicatessen in Boerum Hill on Friday morning, Lander reflected on the contradiction at the center of his congressional campaign: courting a district with a large and politically engaged Jewish electorate while relying on enthusiastic support from activists who oppose Zionism and believe Israel should not exist as a Jewish state.

“I am very comfortable being in coalition with people who have a different point of view on Israel and Palestine, who, I know, value everyone’s humanity,” Lander said.

That principle, he said, applies equally to what he called “illiberal Zionists” who prioritize Jewish lives over Palestinian lives and to anti-Zionists who reject Israeli suffering or, at the extreme, engage in antisemitic actions. Lander pointed to his decision not to attend last month’s Celebrate Israel Parade, citing the participation of Israeli right-wing politicians. Among those who showed up unannounced were Finance Minister Bezalel Smotrich, who has denied the existence of a Palestinian people. Lander also noted that he stopped paying dues to the Democratic Socialists of America after Oct. 7, 2023, because the group’s New York City chapter participated in a Times Square rally the following day that drew widespread condemnation for celebrating the Hamas attacks on Israel.

Lander said that approach often requires difficult conversations with his allies and some uncomfortable moments on the campaign trail.

He recalled being approached recently on the subway by a young activist who recognized him when Lander was on his way to hear Rachel Goldberg-Polin, the mother of slain Israeli-American hostage, speak at Congregation Beth Elohim. “I don’t shake hands with Zionists,” the person said.

Some of the toughest exchanges have been with fellow Jews, he said.

At the Greek Jewish Festival on the Lower East Side earlier this month, one critic approached him demanding to know his “favorite intifada.” Another began shouting insults. Eventually, Lander said, the first critic turned on the second and urged him to stop yelling so they could have a real argument. “We had a Jewish argument,” Lander said. “Neither of us convinced each other, but we had a respectful conversation across lines of difference.”

Lander said he increasingly sees his role as creating space for conversations many people avoid. “I feel like one of my jobs right now is to try to open up difficult conversations,” he said. “I try to be clear about what I think, and then be in dialogue with people about it.”

A debate over Israel 

Lander is challenging Goldman with the backing of Mamdani, whose upset mayoral victory reshaped New York politics, in a campaign that has gone after Goldman as allegedly out of step with Democratic voters who seek change in Israel.

The divide was on full display during a recent televised debate, where the candidates spent the first 15 minutes of a one-hour forum sparring over the Celebrate Israel Parade, the Park Slope Food Coop’s vote to boycott Israeli products, U.S. military aid to Israel and investments in Israel bonds.

Lander is one of three candidates for Congress that Mamdani has endorsed in an early test of his political clout. The other two endorsees, who appear in campaign promotions alongside Lander and Mamdani, are democratic socialists who have drawn scrutiny for inflammatory comments about Israel. Mamdani has notably stayed out of the race to succeed retiring Rep. Jerry Nadler in Manhattan’s neighboring 12th Congressional District, which includes much of the Upper East and Upper West sides. In that race, the leading candidates refused to use the term “genocide” to describe Israel’s actions in Gaza and voiced support for funding Israel’s Iron Dome missile defense system.

Goldman has assembled support from prominent Democratic and labor leaders and elected officials, including Gov. Kathy Hochul and former House Speaker Nancy Pelosi and many of the city’s Jewish elected officials.

The incumbent, touting an endorsement from the pro-peace group J Street, has argued that his record combines progressive values with strong support for Israel and drew a sharp contrast with Lander by presenting himself as the candidate of unwavering conviction. In remarks to Jewish leaders at the Met Council annual breakfast last month, Goldman declared, “I stand before you as a proud Jew and a proud Zionist — and those of us who feel that way can never waver.” He added, “What we need is more than anything is moral clarity. We need to stand for what we believe in, and I will do that right through the tape.”

Carrying the torch

The outcome of the closely watched Manhattan contest — featuring Assemblymembers Alex Bores and Micah Lasher, Nadler’s endorsed successor, along with Jack Schlossberg, the grandson of President John F. Kennedy who was raised Catholic by his mother — could also shape Lander’s place in Congress if he wins. Should Lasher lose, Lander or Goldman could become New York City’s only Jewish member of Congress.

In the interview, Lander said it’s “fair” to suggest he sees himself as carrying on Nadler’s legacy. He praised Nadler, who served 17 terms in Congress and represented large parts of the district before a 2022 redistricting, as a model of a Jewish lawmaker who combined a strong commitment to Israel with a defense of civil liberties and a willingness to challenge political orthodoxy, pointing to Nadler’s support for the Iran nuclear deal despite opposition from many American Jews.

He also invoked a less familiar predecessor. While reading Molly Crabapple’s recent book on the Jewish Labor Bund, Lander said he discovered the story of Meyer London, the socialist congressman who represented the Lower East Side in the early 20th century (and who was championed by the Forward). “One way to think about my campaign,” Lander said, “is that I’m running to be the second Bundist member of Congress from this district.”

Lander said that Nadler and London’s careers reflected a broader tradition of Jewish political engagement in New York that still resonates today. “One of the things I love about New York,” Lander said, “is that every candidate for office has to have a bagel order.” (Lander’s is an everything bagel with scallion cream cheese, tomato, lox and a light toast.) Nadler made headlines after he was televised carrying a bag of Zabar’s food with him to the second impeachment of President Donald Trump in 2021.

The Mamdani-Lander alliance

The message at the heart of Lander’s campaign was on display throughout Sunday’s rally in Brooklyn, a Jewish-Muslim interfaith canvass that featured the diverse coalition backing his candidacy. It echoed a theme that has become central to Lander’s political identity, stretching back to his years as a housing activist and organizer affiliated with Jews for Racial and Economic Justice and continuing through his alliance with Mamdani during last year’s mayoral race.

In a brief appearance, Mamdani revived the Knicks-inspired poem that has become a staple of social media posts during the NBA finals last week. “My mayor Muslim, my Brad Jewish… and I’m not going to go further,” Mamdani said to cheers. Lander offered to complete the rhyme: “My mayor Muslim, next congress member Jewish. Our city’s alive. Knicks in five. It’s up to us to build a world where everyone can thrive.”

Councilmember Shahana Hanif, Lander’s successor in the City Council, welcomed supporters to what she jokingly called “the beautiful country of Mamdanistan.” She said that solidarity requires difficult conversations and disagreements, adding that she had witnessed Lander’s commitment to both Muslim and Jewish communities.

Among the most notable speakers was Mohsen Mahdawi, the Palestinian activist who led the Columbia University Gaza War encampment and has been targeted in the Trump administration’s deportation efforts.

Mahdawi praised Lander for what he described as a moral break with much of the Jewish political establishment. “He was one of the first Jewish leaders to call and acknowledge what’s happening in Gaza is a genocide,” Mahdawi said. Mahdawi later led a “Free Palestine” chant that Lander joined.

Lander, in his remarks, told the crowd, “As a proud Jewish New Yorker, I will join you in that fight to end occupation and apartheid and genocide.”

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