As the political climate is very favourable to Republicans, this is a historic opportunity to dump McCain and get a conservative republican in his place.
McCain knows this and hence he is using every dirty trick in the book etc, Sarah has made the wrong choice here by backing McCain in this primary.
I think Sarah is just giving him payback for thrusting her into the spotlight. It’s ok with me. She has alot to learn and seems to be well on her way.