Largest swings between presidential elections

1. 1932: 35.1% Democratic
2. 1920: 29.3% Republican
3. 1976: 25.3% Democratic
4. 1964: 22.4% Democratic
5. 1960: 15.57% Democratic
6. 1952: 15.33% Republican
7. 1876: 14.8% Democratic
8. 1940: 14.4% Republican
9. 1904: 12.7% Republican
10. 1988: 10.4% Democratic
11. 1908: 10.3% Democratic
12. 2008: 9.7% Democratic
13. 1840: 8.9% Whig
14. 1844: 7.5% Democratic

This is counting only pairs of consecutive elections in which the two major parties combined to account for over 94% of the vote in both elections.

These are all fourteen swings that were greater than 7%. If we consider a 'landslide' an election in which one nominee wins at least 55% of the popular vote, then landslides and elections following landslides account for the top eleven greatest swings (or all those greater than 10%). Furthermore, every landslide and post-landslide election, of which it is the case that the two major parties combined to account for > 94% of the vote in both the election in question and the immediately preceding election, is amongst the top eleven swings, except 1868, 1872, 1936, and 1956.

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