This is a list of electors (members of the Electoral College) who cast ballots to elect the President of the United States and Vice President of the United States in the 1820 presidential election.
A total of 235 men were elected to the Electoral College, but three—one each from Mississippi, Pennsylvania, and Tennessee—did not cast their ballots.
[3] At least two, Melchior Rahm and Duncan Stewart, had died before their state's electors voted; the disposition of the third is unclear.
Ten voted Tompkins for vice president, but James Forrest cast his ballot for Maryland Federalist Robert Goodloe Harper.
Elector Duncan Stewart died on November 26, 1820, before casting his ballot.
[1][2][6][7] All 3 of Missouri's electors voted for Monroe and Tompkins, though whether they should be counted—Missouri would not be formally admitted as a state for several more months—was an unsettled matter of dispute.
Faithless elector William Plumer cast his ballot for Secretary of State John Quincy Adams for president and Pennsylvania Federalist Richard Rush for vice president.
[1][2] All 25 Pennsylvania electors were pledged to Monroe and Tompkins, but only 24 ended up casting ballots.