Following weeks of speculation, City Comptroller Brad Lander officially launched a primary challenge Wednesday against U.S. Rep. Dan Goldman.

Lander enters the race with the backing of several of the country’s most prominent progressive leaders, including Mayor-elect Zohran Mamdani, Vermont Sen. Bernie Sanders and Massachusetts Sen. Elizabeth Warren.

The outgoing comptroller, who did not run for re-election this year in lieu of a failed bid for the Democratic mayoral nomination, kicked off his bid for New York’s 10th Congressional District with a Mister Rogers–themed video released earlier Wednesday morning. The district spans Lower Manhattan, including Tribeca and Chinatown, as well as a large swath of northwest Brooklyn, encompassing Sunset Park and Park Slope.

Goldman, first elected

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