Books are a terrible way to judge a candidate. I suspect most are ghostwritten.
Have you read the book? Hard to judge if you haven't. I certainly would hate to base my judgements of Palin on her portrayal in the media. She had help with her book. I am guessing it is mostly in editing and organizing because the text is definitely Palin's words. The book is based on her journals she has kept since she was young. IF you remember, her book was assigned to 12 fact checkers who were bent on finding errors. Something that other authors, such as Obama, don't have to face.
“Dreams of My Father”? Obama’s books were used for campaigning.
Palin's was ghostwritten by somebody named Lynn Vincent.