How would you have voted?: United States Presidential Elections

[stegosaurus]

1789: George Washington (Independent)
1792: George Washington (Independent)
1796: John Adams (Federalist)
1800: John Adams (Federalist)
1804: Charles Pinckney (Federalist)
1808: James Madison (Democratic-Republican)
1812: James Madison (Democratic-Republican)
1816: James Monroe (Democratic-Republican)
1820: James Monroe (Democratic-Republican)
1824: John Quincy Adams (Democratic-Republican)
1828: John Quincy Adams (National Republican)
1832: Henry Clay (National Republican)
1836: William Henry Harrison (Whig)
1840: William Henry Harrison (Whig)
1844: James K. Polk (Democrat)
1848: Zachary Taylor (Whig)
1852: Winfield Scott (Whig)
1856: John C. Fremont (Republican)
1860: Abraham Lincoln (Republican)
1864: Abraham Lincoln (National Union)
1868: Horatio Seymour (Democratic)
1872: Ulysses S. Grant (Republican)
1876: Samuel J. Tilden (Democrat)
1880: James A. Garfield (Republican)
1884: Grover Cleveland (Democrat)
1888: Grover Cleveland (Democrat)
1892: Grover Cleveland (Democrat)
1896: William McKinley (Republican)
1900: William McKinley (Republican)
1904: Theodore Roosevelt (Republican)
1908: William Howard Taft (Republican)
1912: William Howard Taft (Republican)
1916: Charles Evans Hughes (Republican)
1920: Warren G. Harding (Republican)
1924: Calvin Coolidge (Republican)
1928: Al Smith (Democrat)
1932: no vote.
1936: Alfred Landon (Republican)
1940: Wendell Willkie (Republican)
1944: Thomas Dewey (Republican)
1948: Harry Truman (Democratic)
1952: Dwight Eisenhower (Republican)
1956: Dwight Eisenhower (Republican)
1960: Richard Nixon (Republican)
1964: Barry Goldwater (Republican)
1968: Richard Nixon (Republican)
1972: Richard Nixon (Republican)
1976: Gerald Ford (Republican)
1980: Ronald Reagan (Republican)
1984: Ronald Reagan (Republican)
1988: George H.W. Bush (Republican)
1992: George H.W. Bush (Republican)
1996: Bob Dole (Republican)
2000: George W. Bush (Republican)
2004: George W. Bush (Republican)
2008: John McCain (Republican)

[stegosaurus]

2012: Mitt Romney (R) - very begrudgingly. (supported Santorum in the primary, begrudgingly).
2008: John McCain (R) (and in the primary).
2004: George W. Bush (R) - very begrudgingly.
2000: George W. Bush (R)
1996: Bob Dole (R) (would have supported Alexander in the primary).
1992: George H.W. Bush (R)
1988: George H.W. Bush (R)
1984: Ronald Reagan (R) - begrudgingly.
1980: John Anderson (I)
1976: Gerald Ford (R)
1972: George McGovern (D) - begrudgingly.
1968: Hubert Humphrey (D) - begrudgingly.
1964: Barry Goldwater (R) - very begrudgingly (would have backed Rockefeller in primary).
1960: John Kennedy (D)
1956: Dwight Eisenhower (R)
1952: Dwight Eisenhower (R)
1948: Harry Truman (D)
1944: Thomas Dewey (R)
1940: Wendell Willkie (R)
1936: Al Landon (R)
1932: Herbert Hoover (R)
1928: Herbert Hoover (R)
1924: Calvin Coolidge (R)

That's as far as I can realistically go back with any knowledge. All with hindsight.