Conservatards will cream their panties over her but this is really about the moderates. I expect Fox News to do their usual and for idiots like Elizabeth Hasselbeck or whatever her last name is to spin it as a Palin victory. However, her constant word salads will make it difficult to idiot Americans (read: the majority) to understand what the fuck she is saying. They will lose interest in her fast, especially if she can't give a direct answer or anything that resembles competency. On the other hand, I expect Biden to be very thorough but comprehensible.
No doubt Palin is getting coached but she has been since August. McCain and Co. knew how dumb she was, which is why they made her read a script written before she was vetted. She has been coached the entire time and we're still getting these crappy ass performances.
With the bar already set low and only falling in time, the fact that she managed to dress herself and walk to her designated podium in two tries or less will constitute a victory.
