More from the CNN article linked to in the post below:
"[Palin's] lack of fundamental understanding of some key issues was dramatic," said another McCain source with direct knowledge of the process to prepare Palin after she was picked. The source said it was probably the "hardest" to get her "up to speed than any candidate in history." . . .
"She's no longer playing for 2008; she's playing 2012," Democratic pollster Peter Hart said. "And the difficulty is, when she went on 'Saturday Night Live,' she became a reinforcement of her caricature. She never allowed herself to be vetted, and at the end of the day, voters turned against her both in terms of qualifications and personally."