Biggest presidential landslides
What is the biggest landslide in presidential election history?
Warren G. Harding’s win over James M. Cox in 1920, by 26.2 points in the national popular vote (60.3% to 34.1%), the widest margin of the popular-vote era (1824–present). Franklin D. Roosevelt’s 1936 defeat of Alf Landon (24.3 points) and Lyndon B. Johnson’s 1964 defeat of Barry Goldwater (22.6 points) are the closest challengers.
How this ranking is measured
Ranked by the winner’s lead over the runner-up as a share of the national popular vote (1824–present, the popular-vote era). The electoral-college result is shown alongside for context. See also “Highest popular-vote percentage,” which ranks raw share rather than the margin over the runner-up.