Brad Lander, a prominent progressive Jewish politician in New York, is weighing a run for Congress after being passed over for a top City Hall role in Zohran Mamdani's new administration. Lander, who has been a close ally of Mamdani and played a key role in building support among Jewish voters, is considering challenging incumbent Dan Goldman in the 10th Congressional District. The potential race highlights tensions within the city's Jewish and progressive communities, especially around issues related to Israel and representation. While Lander enjoys strong support from some progressive groups, the field could become crowded, and divisions among left-wing organizations may influence the outcome.