I just checked the AP and it's not looking great. Doable but not great:
Cobb 42% - 37 out of 51 reporting
DeKalb 57% - 41 out of 43 reporting
Fulton 55% - 19 out of 116 reporting
So it looks like it's all on Fulton.
Also there's this: 6th District vote: Fulton extends polling hours; DeKalb and Cobb smooth
For those who don't really treat politics like a bloodsport here's good short read on tomorrow's special election and why those inside the beltway are paying it so much attention.