Geo, Bill Clinton was a centralist, not extreme left. I do agree that many voters may vote against Obama based solely on his skin color, but I think that just as many, if not more, want to show that America wants to move past race, and putting a black man in the Country's highest Office, will show the world, and ourselves, that we disapprove of the racial history in America. If, and only if, all else were equal between the candidates, I'd vote for a black person or a female b/c of race and sex.
I think many voters will skip the research on the candidates, and base their decision on sound-bites from late night comedy shows, like Colbert, Leno, Letterman, Kimmel, and Sat Night Live, or from the pictures and headlines they see in People magazine, The Star, The Enquirer, etc.
Which of his policies, specifically, do you consider to be 'extreme left'?