posted by Strongbow
In terms of the popular vote in the United States, here are the margins of victory in each election from 1824, the earliest election with complete popular vote data available, all the way up to 2004. The list is ranked based on the largest margins of victory down to the smallest in the popular vote.
1. 1920 Harding 60.32% Cox 34.15% +26.19%
2. 1924 Coolidge 54.04% Davis 28.82% +25.22%
3. 1936 Roosevelt 60.80% Landon 36.54% +24.26%
4. 1972 Nixon 60.67% McGovern 37.52% +23.15%
5. 1964 Johnson 61.05% Goldwater 38.47% +22.58%
6. 1904 Roosevelt 56.42% Parker 37.59% +18.83%
7. 1984 Reagan 58.77% Mondale 40.56% +18.21%
8. 1832 Jackson 54.74% Clay 36.93% +17.81%
9. 1932 Roosevelt 57.41% Hoover 39.65% +17.76%
10. 1928 Hoover 58.21% Smith 40.80% +17.41%
11. 1956 Eisenhower 57.37% Stevenson 41.97% +15.4%
12. 1912 Wilson 41.84% Roosevelt 27.40% +14.44%
13. 1836 Van Buren 50.79% Harrison 36.59% +14.2%
14. 1828 Jackson 55.93% Adams 43.68% +12.25%
15. 1856 Buchanan 45.29% Fremont 33.09% +12.2%
16. 1872 Grant 55.58% Greeley 43.78% +11.8%
17. 1952 Eisenhower 55.18% Stevenson 44.33% +10.85%
18. 1824 Adams 30.92% Jackson 41.36% +10.44%
19. 1860 Lincoln 39.65% Douglas 29.52% +10.13%
20. 1864 Lincoln 55.03% McClellan 44.95% +10.08%
21. 1940 Roosevelt 54.74% Willkie 44.78% +9.96%
22. 1980 Reagan 50.75% Carter 41.01% +9.74%
23. 1908 Taft 51.57% Bryan 43.04% +8.53%
24. 1996 Clinton 49.23% Dole 40.72% +8.51%
25. 1988 Bush 53.37% Dukakis 45.65% +7.72%
26. 1944 Roosevelt 53.39% Dewey 45.89% +7.5%
27. 1852 Pierce 50.83% Scott 43.88% +6.95%
28. 1900 McKinley 51.64% Bryan 45.52% +6.12%
29. 1840 Harrison 52.87% Van Buren 46.82% +6.05%
30. 1992 Clinton 43.01% Bush 37.45% +5.56%
31. 1868 Grant 52.66% Seymour 47.34% +5.32%
32. 1848 Taylor 47.28% Cass 42.49% +4.79%
33. 1948 Truman 49.55% Dewey 45.07% +4.48%
34. 1896 McKinley 51.02% Bryan 46.71% +4.31%
35. 1916 Wilson 49.24% Hughes 46.12 +3.12%
36. 1892 Cleveland 46.02% Harrison 43.01% +3.01%
37. 1876 Hayes 47.92% Tilden 50.92% +3%
38. 2004 Bush 50.73% Kerry 48.27% +2.46%
39. 1976 Carter 50.08% Ford 48.02% +2.06%
40. 1844 Polk 49.54% Clay 48.09% +1.45%
41. 1888 Harrison 47.80% Cleveland 48.63% +.83%
42. 1968 Nixon 43.42% Humphrey 42.72% +.7%
43. 1884 Cleveland 48.85% Blaine 48.28% +.57%
44. 2000 Bush 47.87% Gore 48.38% +.51%
45. 1960 Kennedy 49.72% Nixon 49.55% +.17%
46. 1880 Garfield 48.31% Hancock 48.22% +.09%
that list has an error
I will correct it
1. 1920 Harding 60.32% Cox 34.15% +26.19%
2. 1924 Coolidge 54.04% Davis 28.82% +25.22%
3. 1936 Roosevelt 60.80% Landon 36.54% +24.26%
4. 1972 Nixon 60.67% McGovern 37.52% +23.15%
5. 1964 Johnson 61.05% Goldwater 38.47% +22.58%
6. 1904 Roosevelt 56.42% Parker 37.59% +18.83%
7. 1984 Reagan 58.77% Mondale 40.56% +18.21%
8. 1832 Jackson 54.74% Clay 36.93% +17.81%
9. 1932 Roosevelt 57.41% Hoover 39.65% +17.76%
10. 1928 Hoover 58.21% Smith 40.80% +17.41%
11. 1956 Eisenhower 57.37% Stevenson 41.97% +15.4%
12. 1912 Wilson 41.84% Roosevelt 27.40% +14.44%
13. 1836 Van Buren 50.79% Harrison 36.59% +14.2%
14. 1828 Jackson 55.93% Adams 43.68% +12.25%
15. 1856 Buchanan 45.29% Fremont 33.09% +12.2%
16. 1872 Grant 55.58% Greeley 43.78% +11.8%
17. 1952 Eisenhower 55.18% Stevenson 44.33% +10.85%
18. 1824 Adams 30.92% Jackson 41.36% +10.44%
19. 1860 Lincoln 39.65% Douglas 29.52% +10.13%
20. 1864 Lincoln 55.03% McClellan 44.95% +10.08%
21. 1940 Roosevelt 54.74% Willkie 44.78% +9.96%
22. 1980 Reagan 50.75% Carter 41.01% +9.74%
23. 1908 Taft 51.57% Bryan 43.04% +8.53%
24. 1996 Clinton 49.23% Dole 40.72% +8.51%
25. 1988 Bush 53.37% Dukakis 45.65% +7.72%
26. 1944 Roosevelt 53.39% Dewey 45.89% +7.5%
27. 1852 Pierce 50.83% Scott 43.88% +6.95%
28. 1900 McKinley 51.64% Bryan 45.52% +6.12%
29. 1840 Harrison 52.87% Van Buren 46.82% +6.05%
30. 1992 Clinton 43.01% Bush 37.45% +5.56%
31. 1868 Grant 52.66% Seymour 47.34% +5.32%
32. 1848 Taylor 47.28% Cass 42.49% +4.79%
33. 1948 Truman 49.55% Dewey 45.07% +4.48%
34. 1896 McKinley 51.02% Bryan 46.71% +4.31%
35. 1916 Wilson 49.24% Hughes 46.12 +3.12%
36. 1892 Cleveland 46.02% Harrison 43.01% +3.01%
37. 1876 Hayes 47.92% Tilden 50.92% +3%
38. 2004 Bush 50.73% Kerry 48.27% +2.46%
39. 1976 Carter 50.08% Ford 48.02% +2.06%
40. 1844 Polk 49.54% Clay 48.09% +1.45%
41. 1888 Harrison 47.80% Cleveland 48.63% +.83%
42. 1968 Nixon 43.42% Humphrey 42.72% +.7%
43. 1884 Cleveland 48.85% Blaine 48.28% +.57%
44. 1960 Kennedy 49.72% Nixon 49.55% +.17%
45. 1880 Garfield 48.31% Hancock 48.22% +.09%
46. 2000 Bush 47.87% Gore 48.38% -.51%