Their book, detailing the entire 2008 Presidential election and allegations thereof in both parties, had been criticized for relying on too many anonymous sources and lacking explicit sourcing. The film is based upon one-third of the 2010 bestseller of the same name by John Heilemann and Mark Halperin. I personally don't know how accurate 'Game Change' is. Either way, you can't talk about 'Game Change' without feeling the bottoms of your shoes slightly thump against a soap box. I can't imagine a Democrat hating the movie. No doubt, Sarah Palin, if she chooses to watch it, will probably be one of those people. There will be a lot of people who see 'Game Change' and will absolutely hate it.