Another juicy nugget: The book claims that Sarah Palin famously asked Biden during their first debate, "Can I call you Joe?" because during debate preparations, she repeatedly called her opponent "O'Biden," instead of Biden.
The book also claims that after her second network interview, with Kate Couric, Palin expressed regret for taking the vice presidential nomination.
"If I'd known everything I know now, I would not have done this," Palin is quoted as saying.
So far, only a Palin spokesperson has offered a comment, calling the descriptions inaccurate. Halperin and Heilemann tell ABC News their book is based on interviews with over 300 people. They add that many of the revelations aren't based on quotes, but paraphrased statements.
According to publisher HarperCollins' Web site, other questions the book purports to answer include: "How did Obama convince himself that, despite the thinness of his resume, he could somehow beat the odds to become the nation's first African-American president? How did the tumultuous relationship between the Clintons shape -- and warp -- Hillary Clinton's supposedly unstoppable bid? What was behind her husband's furious outbursts and devastating political miscalculations? Why did Sen. John McCain make the novice governor of Alaska his running mate? And was Palin merely painfully out of her depth, or troubled in more serious ways?"
While the former candidates may want to keep the cover shut on the answers, the book will be open to Americans across the country beginning this Monday.