Early voting starts Saturday in New York’s Democratic primaries — with several high-profile races involving far-left insurgents backed by Mayor Zohran Mamdani aiming to take down moderate incumbents. Some of the contests could disrupt the political landscape as the local Democratic Socialists of America chapter aims to grow its presence both locally and nationally following their candidate Mamdani’s stunning win last year. “This is the strongest he’ll ever be, and I think that Mamdani movement,