Game Change: Obama and the Clintons, McCain and Palin, and the Race of a Lifetime is a book by political journalists John Heilemann and Mark Halperin about the 2008 United States presidential election. Released on January 11, 2010, it was also published in the United Kingdom under the title Race of a Lifetime: How Obama Won the White House. The book is based on interviews with more than 300 people involved in the campaign. It discusses factors including Democratic Party presidential candidate John Edwards' extramarital affair, the relationship between Democratic presidential nominee Barack Obama and his vice presidential running mate Joe Biden, the failure of Republican Party candidate Rudy Giuliani's presidential campaign and Sarah Palin's vice presidential candidacy.