The winner of the Democratic primary will face Adams, Republican candidate Curtis Sliwa, and independent candidate Jim Walden come November, but is likely to become the next leader of the city, which has selected a Democrat in the past three mayoral elections. Polls are open in the city until 9 p.m.

As New York's mayoral race heads to the all-important Democratic primary on June 24, Andrew Cuomo is looking to hold off a group of challengers.