I'm a bit shocked that in Mississippi of all places, Palin leads by only 4 points. Is she really that unpopular, even down South?
I wouldn't give President Obama much of a chance against
any Republican in Mississippi except against Sarah Palin. For obvious reasons (the state's politics are almost tribal), President Obama is a horrible match for Mississippi. The only sort of Democrat who can Mississippi since the 1960 is a "good ol' boy" of the sort that Jimmy Carter was (once) in 1976. Barack Obama couldn't restyle himself fast enough to win Mississippi even if he were white.
Sarah Palin loses this state, though, if the 2012 boils down to foreign policy and military affairs and she is the Republican nominee. Military issues and foreign policy matter significantly in the South, probably the only part of the country in which white people join the all-volunteer Armed Forces in above-average numbers for the US as a whole. I think that Sarah Palin needs only expose her ignorance on foreign policy and military issues should those go well for President Obama but seem to depend upon him and upon those around him for the possibility of safety. That just hasn't happened yet, and I can't yet predict it happening.