NEW YORK (WABC) -- Zohran Mamdani was officially sworn in as mayor of New York City just after midnight Thursday, but politicians and other supporters are gathered later in the day at City Hall for a larger ceremony.
Mamdani is the city's first Muslim mayor, its first of South Asian descent and the first to be born in Africa. At 34, he is also the city's youngest mayor since the late 19th century.
The democratic socialist takes office after an historic campaign made "affordability" a national buzzword across the political spectrum.
U.S. Sen. Bernie Sanders administered the public ceremonial oath of office to Mamdani at today's event, broadcast on Channel 7 and streaming on ABC 7 New York.
Mayor Mamdani made some big campaign promises.
The focus is on affordability - from freezing rent to free buses and universal childcare.
So how will he make good on those promises, and what obstacles stand in his way?
Watch our report below:
Hundreds of people have arrived at City Hall ahead of the inauguration at 1:00 p.m.
