[32]

^ John Tyler was elected vice president on the Whig Party ticket in 1840. His policy priorities as president soon proved to be opposed to most of the Whig agenda, and he was expelled from the party five months in office.[33]

^ Millard Fillmore succeeded to the presidency upon the death of Zachary Taylor.[37]

^ When he ran for reelection in 1864, Republican Abraham Lincoln formed a bipartisan electoral alliance with War Democrats by selecting Democrat Andrew Johnson as his running mate, and running on the National Union Party ticket.[41]

^ Andrew Johnson succeeded to the presidency upon the death of Abraham Lincoln.[42]

^ While president, Andrew Johnson tried and failed to build a party of loyalists under the National Union banner. Near the end of his presidency, Johnson rejoined the Democratic Party.[42]

^ Chester A. Arthur succeeded to the presidency upon the death of James A. Garfield.[47]

^ Theodore Roosevelt succeeded to the presidency upon the death of William McKinley.[52]

^ Calvin Coolidge succeeded to the presidency upon the death of Warren G. Harding.[57]

^ Harry S. Truman succeeded to the presidency upon the death of Franklin D. Roosevelt.