Corey Lewandowski, former Trump campaign manager, and David Bossie, a top aide, reveal the roller coaster of the Trump campaign in their upcoming book "Let Trump Be Trump," according to the Washington Post, which received an advance copy of the book.

Why it matters: The book details an inside look at a candidate who was a "renowned germaphobe," increasingly tough on his staff, and had Hope Hicks steam his suit while he was still in it.