Update:
Once every 70 years or so I'll back a Democrat.
1860: Abraham Lincoln1864: Abraham Lincoln
1868: U.S. Grant
1872: U.S. Grant1876: Samuel Tilden1880: James Garfield
1884: James G. Blaine
1888: Benjamin Harrison
1892: Benjamin Harrison
1896: William McKinley
1900: William McKinley
1904: Theodore Roosevelt
1908: William Howard Taft
1912: William Howard Taft
1916: Charles Evans Hughes
1920: Warren Harding
1924: Calvin Coolidge
1928: Herbert Hoover
1932: Franklin Roosevelt
1936: Alf Landon
1940: Wendell Willikie
1944: Thomas E. Dewey
1948: Thomas E. Dewey
1952: Dwight Eisenhower
1956: Dwight Eisenhower
1960: Richard Nixon
1964: Barry Goldwater
1968: Richard Nixon
1972: Richard Nixon
1976: Gerald Ford
1980: Ronald Reagan
1984: Ronald Reagan
1988: George H. W. Bush
1992: George H. W. Bush
1996: Bob Dole
2000: George W. Bush
2004: George W. Bush
2008: Barack Obama
2012: Mitt Romney