Third Party Voting
I know what you’re thinking–“you’re just throwing away your vote!” I disagree. To help me explain why, I’m going to rely on the classic “Calculus of Voting” equation (see this Wikipedia article for an explanation, although I am using the John Aldrich (1993) version):
R = PB + D - C
Which says that voting is rewarding(R) only if the probability(P) of the vote changing the outcome and the benefit(B) you’ll receive from the party you favour winning plus the psychological boost you get from doing your democratic duty(D) is greater than the cost(C) of voting.