I think this would help the republicans a little bit without national embarrassment Sarah Palin.
Changes: Arkansas goes >60% because of Huckabee, slightly better margins in south including >60% in Louisiana, about 57% in Mississippi, and 54% in both Georgia and South Carolina. North Carolina tips to McCain/Huckabee. Nationwide does slightly better for McCain without Palin, however Alaska drops to mid 50's (Romney level) without her. Indiana just barely votes for McCain. However Obama does manage to do much better in Appalachia because of Clinton on the ticket. You can't see it, but McCain would probably get low 50's in West Virginia and about 54% in both TN and KY. Virginia gets slightly better for Obama because of Appalachia and Pennsylvania gets into mid-50's for Obama. Northeast, Midwest, and West all narrowly improve for McCain/Huckabee.