I know. I can hear it already. "Has she even read a book?" Totally unfair of course. I believe Sarah Palin has been easily mocked and is seriously underestimated by glib opponents inside and outside politics. I'll read her book when it comes out and judge it - and her - on merit.
There was an interesting piece published last February by Yuval Levin in Commentary Magazine titled The Meaning of Sarah Palin. It is well worth your time especially if you think Palin doesn't have what it takes.