1 of 4 | New York City Mayor Zohran Mamdani has endorsed three candidates in New York Democratic primary races on Tuesday. Photo by John Angelillo/UPI | License Photo

June 23 (UPI) -- Mamdani-backed progressives scored big wins Tuesday night in New York state's Democratic primary, as voters cast ballots across the Empire State, Maryland, Utah and South Carolina.

New York State

Of the four states holding primaries, New York state's was being closely watched to gauge the influence of New York City Mayor Zohran Mamdani, who had endorsed three progressive candidates in competitive Democratic races -- all of whom appeared poised late Tuesday to win their races.

Brad Lander, a former city comptroller, was running against Goldman in New York District 10 with the endorsements of other big-name progressives, including Sen. Bernie Sanders, I-Vt., and Rep. Alexandria Ocasio-Cortez, D-N.Y.