Watch clips from Bill's interview with David Simon, journalist and creator of The Wire in which he talks the "astonishing" rise of libertarianism, the tragedy of capitalism and why he's want push politicians to the curb.

Take a look at some "also-rans" who have influenced the outcome of elections or shifted the national conversation.

Bill Moyers investigates the connection between presidential politics and Pat Robertson's Regent University. He also speaks with libertarian Nick Gillespie.