PPP also found the 23 percent of those surveyed either said they were unsure or would vote for someone else.
Broun is one of the more candidates known for making outrageous statements in the 2014 election cycle. He called scientific theories of evolution and the big bang "lies straight from the pit of hell" and also more recently wondered why a person who looked "Middle Eastern" was not given a pat down at the airport.
The new poll results are somewhat rare. Previous polling of the GOP primary have shown a near-tie or close race between at least Broun, Kingston, and Gingrey.
Democrats have expressed confidence that if any of those three candidates were to get the nomination Nunn would be in a strong position to win outgoing Republican Sen. Saxby Chambliss's Senate seat.