The outcome was so bizarre, the United States had to amend the Constitution.
After his inauguration, Adams selected Clay as his secretary of state. Jackson accused Adams and Clay of a "corrupt bargain."
The 1860 election was notable because it ripped the long-dominant Party (and nation) in half.
In 1861, delegates from South Carolina, and six of the Southern states formed the Confederate States of America and selected Jefferson Davis as their president.
1872 was strange because one of the primary candidates never saw the final Electoral College vote.
This election wasn't very exciting. Republican Warren G. Harding took more than 60% of the popular vote over Democrat James Cox, along with 37 of the 48 states.
Third place is interesting because union leader Eugene Debs ran his fifth campaign from prison. He was convicted under an espionage law and sentenced to 10 years in prison. Demonstrations protesting his imprisonment evolved into the May Day riots of 1919.
The contest between John F. Kennedy and Richard Nixon marked another precedent: the first time that presidential debates were televised.
This election was not about whether Republican Barry Goldwater or President Lyndon Johnson was a more capable commander in chief. Race shaped the 1964's ballot and would affect elections for decades to come.