Romney drops. Palin surges ahead of where she was before her resignation. People are dumb. There's no way her resignation actually *improved* her chances of being nominated for prez:
The polls show that she has become more popular with the Republican Party, not less, since her resignation. It is plausible that her chances of winning the nomination have gone up even while her chances of winning the general election have plummeted, especially if Obama looks nearly unbeatable and that 71% of Republicans feels content to vote "their hearts" in the primary instead of sending out someone who they don't like who won't win anyway.