Gingrich leads early voters 38-29-20 (G-R-S). 52% think Obama is a Muslim, 12% Christian, 36% Unsure. 66% do not believe in evolution. 29% think interracial marriage should be illegal.
Why does such a state even exist?
There is a big age gap on these questions. For example, on interracial marriage, voters under 45 support it 70-23, while voters over 65 oppose it 43-35. Given that gap, I'm guessing the numbers would be better for voters under 30, if the poll had aggregated them.
In other words, the civil rights movement really did make a difference to how people think, even for conservative whites in Mississippi. It's just that that work isn't quite finished yet.