I haven´t seen any poll from MS either. Even in 2004 and 2006 there were hardly any polls from that state ...
Well, I know who I'm calling as the winner, but w/o even one poll, it's hard to make a percentage.
Well, you'll just have to start at the Bush/Kerry numbers, and adjust based on changes in the perceived African American turnout (I'd guess that moves the needle towards Barbour) and Eaves' conservatism (which may be a plus OR a negative, depending on how you look at things).
I'm expecting a very similar result to Bush/Kerry.