Rep. Phil GingreyJohn (Phil) Phillip GingreyEx-Tea Party lawmakers turn heads on K Street 2017's top health care stories, from ObamaCare to opioids Beating the drum on healthcare MORE (R-Ga.) is planning to run for the Georgia Senate seat being vacated by Sen. Saxby ChamblissClarence (Saxby) Saxby ChamblissLobbying world GOP lobbyist tapped for White House legislative affairs The Hill's Morning Report - Gillibrand drops out as number of debaters shrinks MORE (R), senior GOP strategists in the state told The Hill.

"I've just talked to two people that told me Phil Gingrey is actually calling them telling them he's going to run and his staff is telling people he'll probably make his announcement sometime next week," said Tom Perdue, a top Georgia Republican strategist who is close to Chambliss. "He said it on a conference call with about 12 people."

If Gingrey makes it official soon, he'll be the second GOP candidate in the race — Rep. Paul BrounPaul Collins BrounHundreds apply to fill Isakson's Senate seat in Georgia Joe Lieberman's son running for Senate in Georgia California lawmaker's chief of staff resigns after indictment MORE (R-Ga.) has already announced for the seat. Chambliss (R-Ga.) will retire at the end of his term.
"I know the people on [Gingrey's] team and he's 100 percent in," said another Georgia Republican source, who asked to remain unnamed because Gingrey hasn't officially announced. "He's looking for a full-time campaign manager right now, has direct mail and Internet folks lined up — he's full steam ahead. His conversations are all that he's 100 percent in. The chances of him running are 100 percent."

Perdue added that "one of [Gingrey's] children on her Facebook or Twitter said her daddy is running."

Another top Georgia Republican, when asked if Gingrey would run, wrote in an email: "Yes. He's in." 

According to Gingrey's office, however, the congressman hasn't yet made a final decision.

"In regard to Perdue's claims, they are simply untrue. The congressman is still testing the waters and doing his due diligence. Any reports of a time frame for some kind of announcement or of conference calls with random numbers of people are false," said spokeswoman Jen Talaber.

Other Georgia Republican congressmen are eying the seat as well, including Reps. Tom Price, Jack Kingston and Tom GravesJohn (Tom) Thomas GravesHouse holds moment of silence for John Lewis QAnon scores wins, creating GOP problem Hillicon Valley: Zuckerberg expresses 'disgust,' keeps policies | New doomsday cyber bills | QAnon follower favored for congressional seat MORE

One of the Republican sources said both Kingston and Price have been interviewing consultants as they look at the race, and Price has been ramping up his fundraising as well, as The Hill previously reported. 

Price is not expected to make a decision on the race until late spring. Georgia Lt. Gov. Casey Cagle (R) and former Georgia Secretary of State Karen Handel (R) are also said to be mulling bids.

Gingrey reportedly emailed some Republicans in the state Thursday to let them know he's running for the Senate. His office, however, denied the report.

"I spoke with Phil and he hasn't sent any email indicating a Senate run, so I'm not sure what all of this is about," Talaber said.

Perdue said in addition to the congressmen, Cagle and Handel, he'd talked to a number of state lawmakers, a few mayors and "three significant businessmen in Georgia" who'd told him they were considering the race.

"It's like the ocean," Perdue said of the large and unsettled GOP field for the seat. "Every time the tide rolls in something new gets brought up on the beach and something else gets rolled out."

- Updated at 8:30 p.m.