A new poll from Republican firm InsisderAdvantage finds that Senator Saxby Chambliss (R-GA) could possibly be vulnerable against former Senator Max Cleland (D-GA), whom he defeated in a bitter campaign in 2002. Chambliss leads Cleland 36%-24% in the poll, with a very high 40% undecided rate.

"My guess is that a well-funded Cleland campaign would still be an underdog, but would have more than a legitimate chance of potentially pulling off an upset," wrote InsiderAdvantage CEO Matt Towery, "given the fact that among independent voters, Chambliss led by only 7 points with some 38 percent stating that they were undecided."

Cleland has not given any indication that he's looking at the race.