yes
Yes, there have been protests following presidential elections in the United States.
yes, in the election of 1800 thomas Jefferson and john Adams
No US Presidential election has ever been delayed or cancelled, but in theory it could happen. It would require an overwhelming emergency which makes it impossible to proceed with an election. Nuclear war would probably do it.
Yes
1800 & 1824
I think there were some delays in some of the states for the first presidential election in 1788. There has never been a national postponement of the election. It seems possible that some localities might have been allowed some late voting if a blizzard or flood or disaster made it impossible to open the polls, but I do not know if this has ever happened.
In 1800 between Thomas Jefferson and Aaron Burr. The House of Representatives eventually chose Jefferson after a long struggle.
He is the youngest person ever to win a U.S. Presidential Election.
She was Republic party nominee John McCain's vice-presidential candidate in the 2008 election. She has not sought election as president, though many speculate that she may in the future.
That is true of the vice presidential elections of 1952 and 1956 and of the presidential elections of 1968 and 1972. In the presidential election of 1960 there was some doubt regarding the accuracy of the popular vote in one of the states with enough electoral votes to change the outcome of the election. It was the type of situation for which the demand for a recount would have been appropriate, but Vice Pres. Nixon refused the recount and conceded the election to his friend Jack.
He lived in Chicago, but a presidential candidate doesn't ever represent a specific city for an election.
Every 4 Years to Presidential and Secretarys, Major, Governor Ever 8 Years Senator