There have been five U.S. presidential elections in which the successful presidential candidate did not receive a majority of the popular vote.
In 1824, Andrew Jackson received the most popular votes nationwide, but John Quincy Adams became President. Rutherford B. Hayes in 1876, became President even though Samuel J. Tilden won the national popular vote. In 1888, Grover Cleveland won the national popular vote, but Benjamin Harrison became President. George W. Bush in 2000 became President even though Al Gore won the national popular vote. Similarly, in 2016, Donald Trump became the U.S. President even though Hillary Clinton won the national popular vote.