Editor's Note: Timothy Stanley is a historian and columnist for Britain's Daily Telegraph. He is the author of the new book "Citizen Hollywood: How the Collaboration Between L.A. and D.C. Revolutionized American Politics." The opinions expressed in this commentary are solely those of the author.(CNN)—Mike Huckabee is thinking about running for the presidency a second time. He's super serious about it. You can tell because not only has he quit his TV show to spend time thinking about it, and written a book ("God, Guns, Grits and Gravy," due out on January 20), but he's also booked a tour of...