New Jersey voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican nominee, businessman Donald Trump, and running mate Indiana Governor Mike Pence against Democratic nominee, former Secretary of State Hillary Clinton, and her running mate Virginia Senator Tim Kaine.

Donald Trump became the first Republican to win the White House without carrying Somerset County since Benjamin Harrison in 1888.

New Jersey's presidential primaries were on June 7, 2016, with the Democratic, Republican, and Libertarian parties participating.

Clinton's most notable improvements over Obama in 2012 were seen in Union, Somerset, and Morris Counties.

Clinton's stronger performance in the suburban towns of north-central New Jersey, such as Summit, Westfield, and Bridgewater, helped her narrowly win the 7th congressional district.