The poll shows the race is likely to be competitive, though Nunn is still fairly unknown in the state — roughly one in five voters has a favorable opinion of her, with the same number holding an unfavorable opinion of her. Most of the GOP candidates have similarly low name identification — nearly half of voters don't have an opinion of each of the primary competitors.
Nunn's father, former Sen. Sam Nunn (D-Ga.), is still well-liked: 56 percent of voters have a favorable opinion of the longtime lawmaker, with only 12 percent viewing him disapprovingly.
President Obama's unpopularity will be a problem for Nunn, however. Fully 54 percent of voters in the state disapprove of the job he's doing, with 43 percent approving.
The automated poll of 520 Georgia voters was conducted from Aug. 2-4 and has a margin of error of 4.3 percentage points.