FYI - here are the percentages in recent elections, including minor-party candidates with more than 2%:
2004: Bush 50.7, Kerry 48.3
2000: Gore 48.4, Bush 47.9, Nader 2.7
1996: Clinton 49.2, Dole 40.7, Perot 8.4
1992: Clinton 43.0, Bush 37.5, Perot 18.9
1988: Bush 53.4, Dukakis 45.7
1984: Reagan 58.8, Mondale 40.6
1980: Reagan 50.8, Carter 41.0, Anderson 6.6