Homer Simpson: America, take a good look at your beloved candidates. They’re nothing but hideous space reptiles.
Alien: It’s true. We are aliens, but what are you going to do about it? It’s a two-party system. You have to vote for one of us.
Man: He’s right. This is a two-party system. Well, I believe I’ll vote for a third-party candidate.
Alien: Go Ahead. Throw your vote away.