New Jersey backed George Washington twice.
Washington received all six of the state’s electoral votes in 1789. New Jersey gave six of their votes for vice president to John Jay and one to the winner, John Adams.
There was no popular vote that year. Instead, the New Jersey Legislature picked the electors.
Washington was unopposed for re-election to a second term in 1792 and received all seven of New Jersey’s electoral votes.
Members of the Electoral College from New Jersey backed John Adams against Thomas Jefferson in 1796, and again in 1800 when Jefferson beat him in a rematch. Jefferson took New Jersey in 1804.
New Jersey went for James Madison in 1808, but supported DeWitt Clinton when Madison ran for a second term in 1812.
James Monroe carried New Jersey in 1816 and 1820.
The first time New Jersey voters got to vote in a presidential election was 1824. Andrew Jackson carried New Jersey by a 52%-42% margin over the winner, John Quincy Adams.
Adams carried New Jersey 52%-48% against Jackson in 1828 but lost the national election.
Jackson won re-election in 1832 and carried New Jersey by just 360 votes – 49.9%-49.1%.
New Jersey went for Martin Van Buren over William Henry Harrison by 545 votes – 50.5%-49.5% — in 1836.
Harrison defeated Van Buren in 1840; this time, New Jersey went for Harrison. He carried the state by a margin of 2,317 votes—51.7%-38.1%.
Henry Clay picked New Jersey Senator Theodore Frelinghuysen as his running mate in 1844; That helped Clay carry New Jersey by 823 votes – 50.5%-49.4% — against the winner, James Polk.
Zachary Taylor carried New Jersey by a 51.5%-47.5% margin in 1848. His plurality over Lewis Cass was 3,114 votes.
The Whig Party nominated a New Jerseyan as their presidential candidate in 1852: General Winfield Scott. But Franklin Piece carried the state by 5,709 votes (53%-46%).