Mark Neumann in WI ran for the Senate in 1996 after only 2 terms in Congress. He was a Tea Party Republican before it even existed. He lost to Feingold, and has lost 3 separate elections since then.
Don’t buy into the hype about Michelle Nunn. The Dems in GA have a small war chest and she is not her daddy. She’s hiding from the public and attending private fund raisers. Paul Broun or any of the republican candidates should be able to easily beat her.