With 4% undecided, she'd need to win 3/4 of the undecided voters to get 50%.
There's probably an extra point there with the Libertarian at 4%. Usually L candidates in GA end up in the 2-3% range. Some of that support would likely align more with the Republican (at least traditionally).
You're talking small percentage points here, but it would matter in a race that close where you are trying to avoid a runoff.
However, the race is definitely slightly leaning Nunn at this point. At 47 though, you'd probably be seeing a runoff. She probably needs a 3-4 point lead in these polls to get to 50% + 1.
