Perry’s entry messed up Palin’s plans, whatever they were at that time. We’ll have to wait on the book to know.
Hadn’t Palin already declared she wasn’t running before Perry came in?
I may be wrong but the two events were very close together. I doubt it had much to do with her decision.
And she has a great gig now. Who in their right mind would have entered the race under those circumstances?
It wouldn't surprise me, though, to think that Perry entering the race probably was a factor in her not running, just not a deciding one.