After widespread problems with the state's electronic voting machines caused long lines at polling places, Paladino, with support from Tea Party activists, was projected to seal his upset win over Lazio, CNN reported.
All but written off by the New York GOP establishment, Paladino will face New York Attorney General Andrew Cuomo, running with no significant opposition for the Democratic gubernatorial nomination.
Longtime incumbent Democratic Rep. Charles Rangel, vying to retain his seat amid accusations of unethical conduct, won over a crowded field of primary challengers, most notably Adam Clayton Powell IV, a state assemblyman whose father preceded Rangel in his House seat, The New York Times reported.
New York's two Democratic U.S. senators, Kirsten Hillibrand and Charles Schumer, faced only token opposition in their party's primary.
Celebrity Families of 2014 [PHOTOS]