I wouldn’t call 5% easy, but I would expect notwithstanding this poll that he should be able to win Georgia.
The key is to have Santorum 2nd, and not Romney. It doesn’t look like Gingrich is going to break 50% for the state, I guess he could break 50% in some districts.
There are 31 statewide delegates, assigned proportionately with a 20% threshold, so it would be great if Santorum was built up more, or even Ron Paul, to drive Romney below 20%. Trashing Santorum in Georgia would be extremely counterproductive. 3 statewide go to the winner, the other 28 are assigned by direct proportion (so if the poll here was the actual outcome, statewide Gingrich=15. Santorum=10, Romney=7.
There are 42 district delegates, divided into 14 districts. For each district, if a candidate has 50% they get all 3, if not 2 to first, 1 to second. If every single district was split like this poll, that would be 28 gingrich, 14 santorum, but obviously with a 33/28% split, it is unlikely the ratio is the same; also Romney with 20% may well have 1st in a couple of democratic-leaning districts.
That should have been Gingrich 14, Santorum 10, Romney 7.
The key is to shut Romney out of delegates as much as possible, which means driving his total support below 20%.
Unfortunately, this is one of the few polls that shows Santorum above Romney in georgia. The RCP average is Gingrich 34%, Romney 23%, Santorum 20%.