How can you be undecided?

In politics, how can you be undecided? How do you not know what you think? Have you not studied the issues yet? If so, why not? Have you not been paying attention? Is it boring? Is it a game you are playing with yourself—waiting until the last minute so it will seem like your vote really counts? Is it an expression of hatred for the political system? Is it a protest against political arguments?

What? What is going on? How is it possible to not know what you think?