Silver gives ten reasons:
Although I doubt that Palin can clear the conservative half of the GOP field, someone like a Huckabee could very well decide to go ahead and let Palin run her course, re-entering the field in a 2016 climate that is liable to be more favorable to Republicans.
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2009/11/why-palin-might-win-the-nomination/193881/
