It's possible that Marshall or Barrow will decide that if he must lose, why not lose a Senate race instead of reelection?
Either one would be a respectable opponent, but Chambliss would still be the solid favorite.
I believe Barrow was the closest we came to knocking off an incumbent in this cycle, which was a surprise, as Marshall was viewed as weaker. Marshall would be the stronger of the two statewide, but there is likely to be pressure brought on both to stay put, as an open seat means we pick it up. The Dems could also put up Cathy Cox, the outgoing Sec of State, or the Black Atty Gen, Thurbert Baker (who could run without jeopardizing his office). I was rather surprised we were unable to dislodge Baker this year, or Tommy Irvin, the State Agriculture Commissioner, who has held the job since 1969.
I will add one thing, though... my dream candidate for the Dems is none other than Jimmuh Carter. I'd love to see him obliterated again, for old times' sake. ;-)