1 – 1820 election: William Plumer was pledged to vote for Democratic-Republican presidential candidate James Monroe, who was not contested for re-election, but he instead cast his vote for John Quincy Adams, who was not a candidate in the election. Some historians contend Plumer wanted George Washington to be the only unanimous selection, or that he wanted to draw attention to his friend Adams as a potential candidate. These claims are disputed. Plumer also cast his vice-presidential vote for Richard Rush, not Daniel D. Tompkins as pledged.