Stuck with Cassidy as he is pretty generic.
That being said, Kingston puzzles me. He seems like the perfect candidate, yet is still trailing Nunn in the polls. I know Nunn has the name recognition, but both he and Perdue seem like pretty solid candidates.
Keep in mind that while he was never as bombastic as Broun and Gingrey, Kingston has always been pretty far to the right. He was pulled even further right during the Primaries by having the nutters there.
This could be a case of the tea partiers not winning the Primary, but the presence may have driven the establishment so far right that it could put them in danger for the General.