Mamdani’s insurgents oust two Democratic congressmen in a sweep that rattles the party

New York City Mayor Zohran Mamdani’s slate of fiery progressives swept establishment-backed Democrats in the state’s congressional primaries on Tuesday, ousting two sitting congressmen in a resounding show of force for the democratic socialist leader of America’s largest city, who is fighting to reshape the Democratic Party in New York and beyond. U.S. Rep. Adriano Espaillat, who leads the Congressional Hispanic Caucus and is in his fifth term, was defeated by Mamdani’s most polarizing pick, Darializa Avila Chevalier, a democratic socialist who once helped organize pro-Palestinian protests at Columbia University. U.S. Rep. Dan Goldman, a two-term incumbent, was beaten by the Mamdani-backed former city Comptroller Brad Lander, a fixture among New York progressives who has often shown sympathy to the democratic socialist movement. And another Mamdani ally, democratic socialist state Assembly Member Claire Valdez, defeated the handpicked successor of retiring U.S. Rep. Nydia Velazquez. Tuesday’s primaries represented a major political gamble for the 34-year-old mayor, whose strength is surging, and a potential headache for Democratic leaders, who fear that Mamdani and his loyalists may push the party too far left ahead of November’s midterm elections — when voters across the nation will decide which party controls Congress for the last two years of Trump’s final term. The sweep also sends an undeniable message to establishment Democrats in Washington, including House Democratic Leader Hakeem Jeffries, who campaigned against Mamdani’s candidates and lost. Mamdani and his slate were openly fighting for dramatic change on key issues, Israel’s war in Gaza and affordability chief among them. The mayor ping ponged across the city to celebrate his allies’ victories, declaring that his election had helped ignite a new era. “A year ago, it was not the end of a political movement. It was the beginning,” a smiling Mamdani charged at Valdez’s celebrat