Dekalb gave Obama a 174,000 margin; Cobb gave Romney a 38,000 margin; and Fulton gave Obama a 118,000 margin.
Early voting in these counties would appear to help Clinton.
Cobb will be a purple/blue county within the next 4 years. I got out of there 8 years ago.
Gwinnett may already be there thanks to illegal immigration.
Fulton County has a large majority Black population. No surprise there. Cobb is a suburban White majority County. DeKalb is not as heavy Black as Fulton but has been trending that way over the last three decades.