1 The Hayes-Tilden election of 1876 produced unclear results, but by agreement between the two parties Hayes was seated as president while Tilden and the Democrats got a pullout of federal troops in the South.
2 Garfield was assassinated while in office.
3 As vice-president, Arthur succeeded Garfield and served one term.
4 McKinley won re-election in 1900, again against Bryan, but was assassinated in 1901, six months into his second term.