New Yorkers have shaken the United States's political establishment and delivered 34-year-old socialist Zohran Mamdani a thumping victory in the city's contentious mayoral election.

For weeks, polls predicted Mr Mamdani was on course for an historic triumph and as counting continued on Tuesday night, local time, his lead became unassailable.

He will become the first Muslim mayor of New York, and joins a small handful of people born overseas to get the keys to Gracie Mansion since the city threw off its colonial shackles almost two centuries ago.

Mr Mamdani ran for the Democrats — one of two major political parties in the US — but his policy platform was considered so radical many in the organisation's old guard declined to endorse him.

His signature promises are designed to combat the

See Full Page