Self-described democratic socialist Zohran Mamdani's unexpected upset in New York City's Democratic mayoral primary on Tuesday exhilarated progressive activists, who had banded together to prevent the more moderate former New York Governor Andrew Cuomo from triumphing.

State Assemblyman Zohran Mamdani, the Democrats’ presumptive nominee for mayor of Wall Street’s home city, climbed atop a rooftop podium on election night, vowing a more socialist New York.

NEW YORK (WABC) -- Former Gov. Andrew Cuomo conceded New York City's Democratic mayoral primary to self-described Democratic Socialist state Assemblyman Zohran Mamdani on Tuesday night. The race's outcome will still be decided by a ranked-choice count but the 33-year-old front-runner remains in a commanding position.