Voters in Westchester and the Hudson Valley will be heading to the polls Tuesday for Primary Day.In Mount Vernon, Democrats are deciding on their party's nominee for mayor. Incumbent Ernie Davis is seeking his fourth consecutive term. Looking to unseat Davis is legislator Clinton Young.Another Democratic incumbent is being challenged in Greenburgh. Democratic Party chair Suzanne Berger is challenging Town Supervisor Paul Feiner.In Yonkers, Republican incumbent Mayor Phil Amicone is hoping to secure his party's nomination as he seeks a second term. Former City Council President Vincenza Restiano is Amicone's opponent.Other races being watched include mayoral races in Haverstraw and Newburgh and the race for town supervisor in Putnam Valley.News 12 will have extensive coverage of Primary Day beginning at 9 p.m.Click here for more on voter turnout and the Yonkers mayoral raceClick here for more on voter turnout and the Mount Vernon mayoral race