In 2004, Ian Bogost predicted that every major candidate in the 2008 US presidential elections would have their own PlayStation3 game. It didn't happen, and here's why:
One of the things that games do that kind of works against politicking is that they can’t help but try to show how something works, to kind of dig underneath and give you some experience with it. And if you are a politician, what you really want to control is image and speech. You might not want to touch this interactive medium, where things can become uncertain.
The Dish 