Start by noticing just how much Mitt Romney acts and sounds like the demonic Mayor Wilkins from "Buffy The Vampire Slayer," and you just might end casting the GOP primary slate as the "BTVS" villains they most resemble. For example, Rudy Giuliani is Angelus, "A genuine threat to destroy the world, with a string of broken hearts behind him."
You could try the same game with the Dems, of course, casting them as either the forces of good or as more villains. Would Hillary be Halfrek the vengance demon, Willow (because she's gay and a witch, as the vast right-wing conspiracy alleges) or Buffy?
Obama, as the token black guy in the race, obviously gets cast as the token black guy on the show, "freelance demon fighter" and high-school principal Robin Wood. Both Principal Wood and Obama are remarkably attractive men fighting for what they believe is right, so that works well. Plus, if you cast Hillary as Buffy, you get the "fighting for the same team but with significant personal disagreements" relationship as on the show.
John Edwards can be Xander, because he's cute and well-meaning but sort of ineffectual. And of course Kucinich has to be cast as Clem the friendly demon, because he's funny-looking and not really important in the grand scheme of things. Can you think of others? Bill Richardson?
http://blog.meevee.com/my_weblog/2008/01/buffy-the-vampi.html