IMO, F9/11 is pretty much "based on a true story" infotainment. Some very good key truths, but any cohesive argument fell apart into random suggestions, gross simplifications, and far-fetched conspiracy theories. So I would never vote based on that anymore than I'd vote based on watching Bill O'Reilly on Fox News.
But I have to say, I was very much entertained by last night's new South Park where they skewered the whole voting process, P Diddy's ridiculous "Vote or Die" campaign, and the notion of always having to vote between a Giant Douche and a Turd Sandwich. Pretty much summed it up.