Many Democratic leaders and donors are panicking about Zohran Mamdani, the 33-year-old democratic socialist who won the party's nomination to be the next mayor of New York City. Why it matters: Establishment Democrats looking to recover from 2024's losses fear Mamdani could hurt the party's brand nationally — while young progressives believe his formula could spread beyond New York.

Tuesday is the last day voters can cast their ballots in the increasingly dramatic Democratic primary contest for New York City mayor. The race has emerged as a nail-biter between former New York Gov.