Says who?
Arrived at my polling place in North Atlanta suburb at 6:45, there were 26 people there already in front of me. When the polls opened at 7, there were about 20 more behind me. When I left at 7:10, another about 20 had arrived since 7.
They all appeared to have driven to the poll by themselves, and did not appear to be drunk, so I can assume they are likely voting Republican.