New York City Mayor Zohran Mamdani's three endorsed congressional candidates all won their primaries on Tuesday, with two defeating Democratic incumbents — a significant show of political power for the left-wing faction of the Democratic Party. The sweep demonstrates Mamdani's ability to mobilize voters behind progressive candidates backing policies like Israel criticism and aggressive economic reforms. This strengthens the progressive wing's position in Congress ahead of November, though it has drawn criticism from establishment Democrats like AG Letitia James who backs more moderate candidates.