Clean sweep for Mamdani-backed candidates in New York's Democratic primary

New York City Mayor Zohran Mamdani's endorsed candidates swept Democratic U.S. House primaries across New York, defeating establishment-backed incumbents in multiple races on June 24, 2026. The victories by Mamdani-backed progressives, who centered criticism of Israeli policy in their campaigns, intensified Democratic Party divisions over the Israeli-Palestinian conflict and solidified Mamdani's influence as a kingmaker in the party's left wing.