Have you ever wondered why Americans vote--or don't vote--the way they do? What are "undecided" voters all about? How do they decide who to vote for? What makes one person certain from the get-go that she will vote Democratic or Republican; and another person unsure which lever he will pull (or chad he will punch) until the moment arrives? Do some people need to think more deeply about the issues? Or is it the color of the buttons?