[tdb7893]

Obviously you have less choices than the in the two party system but it also means that the choices need to appeal to a broader subset of the audience. Third parties don't win but they can make one of the main parties lose so if there is a really popular third party one of the main parties would probably just absorb most of their ideas into their main platform. I'm not saying that the two party system is perfect (or even good), just that the parties have to fight for votes has a tendency to move the parties to where the voters are.