A new series of Emerson College polls of three closely watched New York Democratic congressional primaries shows a strong left-wing, anti-establishment sentiment coursing through the party. 

The polls, commissioned by WPIX-TV, find that a sitting congressman, party-backed borough president and experienced state assemblyman championed by local political leaders are either trailing or barely leading their insurgent challengers.

Rep. Dan Goldman (D-NY), a pro-Israel liberal and fierce critic of President Donald Trump, is badly trailing by 34 points (57-23%) his left-wing challenger Brad Lander, who most recently served as New York City comptroller and has been deeply critical of Israel. 

Lander, who was endorsed by New York City Mayor Zohran Mamdani, holds a substantial advantage among voters under 40, winning 73% of the younger constituency. Mamdani, who comfortably carried the district in last year’s mayoral election, holds a 79% approval rating among Democrats in the progressive district.

Goldman’s campaign manager, Simone Kanter, questioned the poll’s methodology in a post on X: “Emerson is assuming an electorate that looks exactly like the once-in-a-generation turnout Mamdani mobilized when he was on the ballot.”

In New York’s 7th Congressional District, the poll finds Assemblymember Claire Valdez, the Democratic candidate backed by Mamdani and the local chapter of Democratic Socialists for America (DSA), holding a narrow lead (23-21%) over Brooklyn Borough President Antonio Reynoso, the candidate endorsed by retiring Rep. Nydia Velazquez (D-NY). A near-majority of Democratic voters (43%) are still undecided.

And in the race to replace retiring Rep. Jerry Nadler (D-NY), state Assemblymember Micah Lasher has a small advantage over Assemblymember Alex Bores, and a larger lead over social media influencer Jack Schlossberg and attorney George Conway. 

Lasher holds more institutional support in the race, boasting the endorsements of Nadler, Gov. Kathy Hochul and former New York City Mayor Michael Bloomberg, but that backing hasn’t automatically led into widespread party support. Still, this poll shows Lasher leading, in contrast to other recent public and internal polls that found Bores with a narrow edge.