Because there are quite a few versions/models out there! Isn't it astounding to see that voters have many different options of the SAME candidate to choose from?
Jon Stewart and his team wrap it up well: http://www.thedailyshow.com/watch/tue-october-23-2012/campaign-closing-arguments
Jon Stewart and his team wrap it up well: http://www.thedailyshow.com/watch/tue-october-23-2012/campaign-closing-arguments
