I voted for McCain over Obama because I said during the campaign that there was absolutely no way he'd be able to keep most, if any, of his campaign promises. (It hurt to vote for Palin though.) Here we are half a decade later and Guantanamo is still open, we're still fighting a multiple front war in the Middle East, housing is only now starting to rebound (as well as arguably the job market, if you discount underemployment), and healthcare is a bigger mess today than it was 5 years ago.
Still, I voted for Obama over Romney. I don't believe a businessperson should be in charge of the country. I firmly believe that someone who has big ideals and speaks well should be President. In retrospect that would scream Obama, even in the first election, but I just felt like he was flat out lying to people as though we were all ignorant of reality (which he was...because generally Americans were).
I'm all for liberals in the White House and conservatives in Congress. That said, I'm as anti-tea party as a person could be. Ultra-idealism on either side is bad for us all. The old saying often used regarding food applies to the political theater as well: "Everything in moderation."