The democratic-socialist phenom begins one of the most unrelenting jobs in American politics as one of the country’s most-watched politicians.

Mamdani, a 34-year-old democratic socialist, already faces intense scrutiny, even before taking office in one of the country's most scrutinized political jobs.

New York Attorney General Letitia James, a political ally and notable foe of President Donald Trump, will administer the oath of office.