Warner Bros is owned by Multi Billion Dollar Corporation Time Warner and so is CNN.
CNN supports the 2 party System by only showing Republican and Democrat on their network. Not the 3rd parties.
Time Warner also distributes the Ellen DeGeneres Show.
Ellen supports Obama.
So why would Time Warner distribute a movie like the Campaign that jokes about Goldman Sach funding the candidate, Lobbyists choosing the candidates, and the dumb american stereotype of voting for whoever talks about Jesus, supports the military, says America is great and does not clearly state their plans as a politician by avoiding certain questions.