Less than 30% of Democrats voted in the mayoral primary. Of those, supposedly, 43.5% voted for Mamdani. So some 12.9% of New York Democrats voted for Mamdani.
56% of registered voters in the city are Democrats so some 7.2% of city residents voted for him.
New York City has a population of 8.2 million. Of those 432,305 or 5% voted for Mamdani.
