If Palin is only leading by two now, her chances of being the nominee are very low.
Disagree. This all comes down to Iowa and South Carolina. She is the big favorite to win Iowa, especially if Huckabee doesn't run. After skipping New Hampshire, she'll go down to South Carolina where the evangelical conservative base and Nikki Haley will vote for her. If she wins those two states, it's over. The fact Palin is viewed so highly even after quitting two years into her governorship shows how strong she is.