NBC News projects Brad Lander as the winner in New York’s 10th Congressional District Democratic primary over incumbent Dan Goldman, with Jennifer Moore listed as uncontested in her race; live results include county breakdowns and estimates of remaining votes.
New York City’s Democratic Socialist movement, led by Mayor Zohran Mamdani, scored major wins in Tuesday’s congressional primaries with Brad Lander defeating Dan Goldman in NY-10, Claire Valdez beating Brooklyn’s Antonio Reynoso in NY-7, and Darializa Avila Chevalier defeating Adriano Espaillat, signaling a durable shift for the left within the Democratic Party amid debates over Israel’s war in Gaza and rising campaign spending by outside groups.
NBC News projects Brad Lander has won the NY-10 Democratic nomination, defeating incumbent Dan Goldman in a vote shaped by divisions over Israel and backed by a Progressive coalition led by Mayor Zohran Mamdani. Goldman, once seen as a rising star after his role in Trump impeachment proceedings, faced strong opposition on Israel policy and other issues, making him the fifth U.S. House incumbent to lose a primary in 2026. Lander’s victory positions him to carry the district in the general election amid a broader shake-up within the Democratic Party.
Emerson College Polling/PIX11 surveyed NYC Democratic primary voters May 16-17, 2026. In NY-07, Valdez leads 23% to Reynoso 21% and Won 13% with many voters undecided. In NY-10, Lander leads 57% to Goldman 23% with 20% undecided. In NY-12, Lasher 22% leads Bores 20%, with Schlossberg 11% and Conway 10% and 32% undecided. Mayor Mamdani enjoys broad approval across the three districts (78% in NY-07, 79% in NY-10, 66% in NY-12); voters feel safe in their neighborhoods, and views on the economy skew poor among voters in NY-07 and NY-10, with NY-12 more mixed. The samples were about 350-450 likely Democratic primary voters per district, with MOEs around 4.6-5.2%.