The 2017 Westchester County Executive election was held on November 7, 2017. After a primary in September, State Senator George Latimer was chosen as the Democratic Party candidate to challenge incumbent County Executive Rob Astorino. Latimer defeated Astorino 56.6% to 43.4%. The County Executive race took place alongside elections for the county legislature.

Primaries Democratic

General election 2017 Westchester County Executive electionPartyCandidateVotesPercentageDemocraticGeorge S. Latimer116,83453.2%Working FamiliesGeorge S. Latimer4,0341.8%IndependenceGeorge S. Latimer2,2141.0%Women's EqualityGeorge S. Latimer9600.4%ReformGeorge S. Latimer2310.1%TotalGeorge S. Latimer124,27356.6%RepublicanRob Astorino82,92937.8%ConservativeRob Astorino12,4415.7%TotalRob Astorino (incumbent)95,37043.4%Majority28,90313.2%Totals219,764100.0%Democratic gain from Republican

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