my teacher isn't that kind of sort that tries to influence you. she says if none of the big partys and nobody of their candidates supports your interests, then you don't vote for them and if theres nobody to vote for then you should maybe vote for the "Royal Society for the preservation of cruelty to animals" or somebody else, who supports your interests, also if they don't have a chance to win. at least they support your interests and you haven't wasted your vote.
(Sorry, I'm from Germany, it's a bit different here in politics. and also sorry for my english)
Ronnekiens