Gingrey was there to "get to know folks a little bit better," and said he's met with multiple senators.
The congressman walked with Sen. Deb Fischer (R-NE), who also beat a crowded primary in 2012.
"I'm sure he knows how to run his primary in Georgia," she told National Journal.
Gingrey is considered one of the frontrunners in the primary, but has previously gotten himself into hot water by defending former Rep. Todd Akin's comments about "legitimate rape."
A Public Policy Polling poll released Monday had Gingrey in second place with 14 percent of Republican primary voters supporting him, trailing Rep. Paul Broun (R-GA) by 13 points.