Forty-eight days before the release and she’s already topped Dan Brown’s latest conspiracy-theory casserole at both top retailers. To put that in perspective, note that the book doesn’t even have a cover yet. So much for the Page Six hit piece about demand for her being slack. No way to tell yet, obviously, whether the monster launch will have legs or whether it’ll deflate a bit next week after Palinistas are all done ordering their advance copies. But if it goes on to become a mega-seller, it’s a game-changer insofar as it’ll establish her unquestionably as the most prominent Republican...