What a cool post. My own answer is that we should vote based on our own personal beliefs. Personally, I believe that libertarianism is the best form of government. My vote is my only voice in politics right now. Maybe later when I have more money I will be able to financially support the libertarian party as well. Personally, I can't think of a more worthy cause to tithe to, as libertarianism is by definition true freedom from oppression.
/Things aren't as complicated as people make them.