What US president did not win the election fairly?

Answer 1

It depends on your definition of fair, there is almost always some underhand dealings in politics whether it is bad mouthing the opposition, or taking contributions for future "favors".

So all in all, I would say - All of them!

Answer 2

In the 1824 presidential election an individual needed to receive at least 131 electoral votes out of the 261 total electoral votes. Andrew Jackson received 99 electoral votes, John Quincy Adams received 84 electoral votes, William Crawford received 41 electoral votes, and Henry Clay received 37 electoral votes. The popular vote totals were Andrew Jackson 151,271, John Quincy Adams 113,122, Henry Clay 47,531, and William Crawford 40,856. Since no candidate received the required majority of 131 electoral votes, the president was elected by the U.S. House of Representatives in accordance with the Twelfth Amendment of the United States Constitution. John Quincy Adams won the election in the U.S. House of Representatives.

Answer 3

John Quincy Adams is the only elected president who did not receive a majority of the electoral vote. He was elected by the House in 1824 after finishing second in electoral votes.