Game Change is a 2012 American HBO political drama film based on events of the 2008 United States presidential election campaign, directed by Jay Roach and written by Danny Strong, based on the 2010 book of the same name documenting the campaign by political journalists Mark Halperin and John Heilemann. The film stars Julianne Moore, Woody Harrelson and Ed Harris, and focuses on the chapters about the selection and performance of Governor of Alaska Sarah Palin (Moore) as running mate to Senator John McCain (Harris) in the Republican presidential campaign.