A new poll shows a Zohran Mamdani-endorsed House candidate swamping a Democrat incumbent endorsed by congressional leadership, reflecting an anti-incumbent spirit in the party driven by an increasingly anti-billionaire and anti-Israeli government base.
New York City Comptroller Brad Lander, who ran in the Democratic primary for mayor in 2025, leads incumbent Rep. Dan Goldman by a whopping 57% to 23% margin among likely primary voters in New York’s 10th Congressional District, per Emerson College Polling.
Lander’s lead is well beyond the survey’s 4.6% margin of error. The poll of 450 voters was conducted from May 16-17. The primary will be on June 23.
Twenty percent of Democrats are undecided.
The comptroller, who supported Mamdani’s campaign after losing in the Democratic primary, is also endorsed by Sen. Elizabeth Warren, D-Mass., and Sen. Bernie Sanders, I-Vt.
However, House Minority Leader Hakeem Jeffries, D-N.Y., has endorsed Goldman alongside House Minority Whip Katherine Clark, D-Mass., and caucus chair Pete Aguilar, D-Calif.
Lander has pledged to vote against aid to Israel and has targeted Goldman for his pro-Israel positions and for ties to the American Israel Public Affairs Committee (AIPAC).
Lander and Goldman are both Jewish.
Goldman has accepted the organization’s endorsement and recently told the Jewish Telegraphic Agency, “I do think there is an undercurrent of antisemitism in the degree to which AIPAC seems to be vilified.”
“I have personally pushed AIPAC very much to recognize that it is an organization that supports first and foremost the State of Israel and the US-Israel relationship, but that does not mean that they should be unwavering in their support for the Israeli government,” he told the publication. “And that it is important for them to draw that distinction and be critical of the Israeli government when it is appropriate.”
Goldman has been in Congress since 2023. As an heir to the Levi Strauss & Co. fortune, he is one of the wealthiest members of Congress.
The data also shows a sizable generation gap in the primary.
“While all age groups break for Lander, his most significant support comes from voters under 40, who break for Lander over Goldman, 73% to 15%,” Spencer Kimball, Emerson’s executive director writes in the release. “Voters over 70 are more split; 38% support Lander, while 31% support Goldman.”
The candidates did not respond to a request for comment from the Daily Signal.
