The first trailer from HBO films Game Change, based on the 2010 book by Journalists John Heilemann and Mark Halperin and starring, Ed Harris as Republican presidential candidate John McCain, Julianne Moore as vice-presidential nominee Sarah Palin, Woody Harrelson plays McCain’s campaign manager Steve Schmidt, Peter MacNicol as Republican national campaign manager Rick Davis, Ron Livingston as campaign advisor Mark Wallace and Melissa Farman as Bristol Palin, Sarah Palin’s oldest daughter.