Mamdani-backed slate sweeps House primaries

Three candidates backed by New York Mayor Zohran Mamdani won Democratic House primaries, including two challengers who defeated incumbents, with safe seats pointing toward November.

1. Frame 1Mamdani-backed candidates turn New York House primaries into a three-seat progressive sweep, giving voters November nominees.
2. Frame 2The mayor's endorsements linked NY-7, NY-10, and NY-13 into one test of Democratic power.
3. Frame 3Brad Lander defeated Rep. Dan Goldman in NY-10, giving the slate its first incumbent upset.
4. Frame 4Claire Valdez won the open NY-7 primary over Antonio Reynoso after local leaders backed Reynoso.
5. Frame 5Darializa Avila Chevalier beat Rep. Adriano Espaillat in NY-13 after he conceded Tuesday night.
6. Frame 6November comes next; safe Democratic seats make the primary sweep likely to carry into Congress.