S. House primaries took place on Tuesday. New York City Mayor Zohran Mamdani supported three progressive candidates in these races.

These candidates were competing against establishment-backed opponents, including two incumbents. Mamdani's support appeared to be effective, as all three of his preferred candidates emerged victorious. Further details about the primaries and their outcomes are available from NBC Los Angeles.

The results of these elections are notable, with two self-described democratic socialists likely to be elected to Congress as a result.