Carter has run a surprisingly good race. But Deal has also done well and the statewide GOP tilt and the overall trend gives him the edge. If he doesn't win it outright next week, he will clearly be favored in the runoff.
I still think we are two years away from Georgia becoming a purple state. 2016 will be big here, and you have to think that if Johnny Isakson doesn't run for reelection (highly probable), Carter (or any Democrat) could be in a very strong position for the 2016 Senate race.
Or 2020, a presidential year when Perdue will have to run for re-election...