A win on Sunday would make him the first player since Tiger Woods in 2006 to win three consecutive PGA Tour events.
Dustin Johnson in 2017 was the last to win three-straight starts, though he skipped a tournament during that run.
Todd’s fellow American Webb Simpson (63) and Colombian Sebastian Munoz (66) are equal second in Georgia on 16-under.
D.J. Trahan (67) is solo fourth at 15-under while Tyler Duncan, who started the third round with a two-shot lead, made 18 pars for a 70 to be tied for fifth at 14-under.
Australian Rhein Gibson will need a miracle to contend after a four-over 74, which included a double bogey and triple bogey on the last resulted in him plummeting from equal second overnight to tied 39th at eight-under.
His compatriot Matt Jones fared marginally better with a two-over 72 that left him at four-under and a share of 69th.
Todd, who overcame a case of the full yips that nearly drove him from the game, was ranked 525th in the world before winning the Bermuda Open three weeks ago.
He followed up with victory at last week’s Mayakoba Classic in Mexico.
He missed 37 of 41 cuts from 2016-18 before regaining his PGA Tour card this year.
Along the way he read a book by Australian golfer Bradley Hughes and began working with the writer and swing guru.
“I went and saw him and it’s just kind of been a home run ever since,” Todd said in a May interview.