You are looking at this in a logical way.
If the blacks in GA love their plantation master it could be close.
The transplants from the North will break 70-30 Trump.
Long before the Northern transplants arrived, there was a powerful strain of Jimmy Carter liberalism in Georgia.
My college girlfriend came from a prominent family in Macon.
Her family and their neighbors were very religious, very Conservative, and TOTALLY Democrat!
And, no, I still don’t understand it.