The most important debate topic for me is nuclear energy; if a candidate is pro-nuclear energy of any sort, then I won't vote for him or her. Chances are that I will be voted for a third party (perhaps Green again this year) because of this.
And I'm perfectly fine with that. My family tried to dissuade me from voting for a third party because "it doesn't matter" and "they'll never win." Will a third party take office? No. Could a third party some day take office, as the American people begin looking at other political options instead of pigeon-holing themselves with a two-party system? Yes. I vote third party to be part of the statistics, part of the riding number of voters unhappy with the the leading Democratic and Republican options and aching for something new.
And the "vote for the lesser of two evils" chatter is pure BS. 1] You're still voting for something evil and 2] There ARE other options out there, so why not vote for one of those?