I bolded the candidates I'd be most enthusiastic about/or would have no doubt in my mind about.
2012: Mitt Romney [R-MA]
2008: Barack Obama [D-IL]
2004: George W Bush [R-TX]
2000: George W Bush [R-TX]
1996: Bob Dole [R-KS]
1992: Ross Perot [I-TX]
1988: George H.W Bush [R-TX]
1984: Ronald Reagan [R-CA]
1980: Ronald Reagan [R-CA]
1976: Gerald Ford [R-MI]
1972: Richard Nixon [R-CA]
1968: Richard Nixon [R-NY]
1964: Barry Goldwater [R-AZ]
1960: John F Kennedy [D-MA]
1956: Dwight Eisenhower [R-PA]
1952: Dwight Eisenhower [R-KS]
1948: Thomas Dewey [R-NY]
1944: Thomas Dewey [R-NY]
1940: Wendell Wilkie [R-NY]
1936: Alf Landon [R-KS]
1932: Franklin Roosevelt [D-NY]
1928: Herbert Hoover [R-CA]
1924: Calvin Coolidge [R-MA]
1920: Warren Harding [R-OH]
1916: Charles Hughes [R-NY]
1912: William Taft [R-OH]
1908: William Taft [R-OH]
1904: Alton Parker [D-NY]
1900: William McKinley [R-OH]
1896: John Palmer [ND-IL]
1892: Grover Cleveland [D-NY]
1888: Grover Cleveland [D-NY]
1884: James Blaine [R-ME]
1880: James Garfield [R- OH]
1876: Rutherford Hayes [R-OH]
1872: Ulysses S. Grant [R-IL]
1868: Horatio Seymour [D-NY]
1864: Abraham Lincoln [R-IL]
1860: Abraham Lincoln [R-IL]
1856: John Fremont [R-CA]
1852: Franklin Peirce [D-NH]
1848: Lewis Cass [D-MI]
1844: James Polk [D-TN]
1840: William H Harrison [W-OH]
1836: Martin van Buren [D-NY]
1832: Andrew Jackson [D-TN]
1828: Andrew Jackson [D-TN]
1824: Henry Clay [DR-KY]
1820: James Monroe [DR-VA]
1816: James Monroe [DR-VA]
1812: James Madison [DR-VA]
1808: James Madison [DR-VA]
1804: Thomas Jefferson [DR- VA]
1800: Thomas Jefferson[DR- VA]
1796: Thomas Jefferson [DR- VA]
1792: George Washington (I-VA)
1789: George Washington (I-VA)
Generic Midterm Election Ballots 1930-2014:
1930: Democratic
1934: Democratic
1938: Republican
1942: Republican
1946: Republican
1950: Republican
1954: Republican
1958: Democratic
1962: Republican
1966: Republican
1970: Democratic
1974: Republican
1978: Republican
1982: Republican
1986: Republican
1990: Democratic
1994: Republican
1998: Republican
2002: Republican
2006: Democratic
2010: Republican
2014: Republican