Prior to the adoption of the Twenty-fifth Amendment in 1967, a vacancy in the office of vice president was not filled until the next ensuing election and inauguration.

^ Johnson saw 15 of his vetoes overridden by Congress, more than any other President.

^ Wordplay on gerrymandering.

^ The Know Nothings, who were then formally known as the American Party.

^ Replaced ad interim by Ulysses S. Grant in August 1867 before being reinstated by Congress in January 1868

References
Citations

^ Castel 2002, p. 231.

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^ Gordon-Reed, pp. 17–18.

^ Jump up to: a b c Castel 2002, p. 225.

^ Trefousse, p. 20.

^ Gordon-Reed, pp. 18–22.

^ Gordon-Reed, pp. 22–23.

^ Gordon-Reed, p. 26.

^ Gordon-Reed, p. 27.

