Who was the most "electable" candidate for both parties, by year?

[Oldiesfreak1854]

Republicans
1968: Richard Nixon (though Nelson Rockefeller probably would have won, too)
1976: Gerald Ford
1980: George H.W. Bush (with John Anderson a close second)
1988: George H.W. Bush
1992: George H.W. Bush
1996: Pete Wilson (people forget that he even ran)
2000: John McCain
2008: John McCain (though in hindsight, Romney probably would have been more electable with the financial crisis)
2012: Mitt Romney

Democrats
1968: Bobby Kennedy (pretty self-explanatory)
1972: Ed Muskie (before he imploded in New Hampshire)
1976: Jerry Brown
1980: Ted Kennedy
1984: Gary Hart
1988: Paul Simon (hard to tell, but he was from Illinois, which was then a swing state, and was generally popular, although Gephardt and Gore might have done well, too.)
1992: Clinton (He did so well he gave us a realignment, after all.)
2000: Al Gore
2004: John Edwards (Karl Rove even said that Edwards was the Democrat who made the Bush campaign most nervous)
2008: Hillary Clinton (again, pretty self-explanatory; Obama looked more electable in the primaries, but polls during and after the general election campaign showed Clinton would have beaten McCain by a wider margin that Obama did.)

[Oldiesfreak1854]

2012: Mitt Romney (R)
2008: John McCain (R) & Hillary Clinton (D)
2004: John Edwards (D)
2000: John McCain (R) & Al Gore (D)
1996: Pete Wilson (R)
1992: George HW Bush (R) & Bill Clinton (D)
1988: Jack Kemp (R) & Al Gore (D)
1984: Gary Hart (D)
1980: George HW Bush (R) & Ted Kennedy (D)
1976: Gerald Ford (R) & Jerry Brown (D)
1972: Ed Muskie (D)
1968: Nelson Rockefeller (R) & Bobby Kennedy (D)
1964: Nelson Rockefeller (R)
1960: Richard Nixon (R) & John F. Kennedy (D)