Sen. Chambliss (R-GA) still sounds like he could be vulnerable to a Democratic challenger. One recent poll puts his approval rating at 52%, and another poll might have an especially troubling result for the incumbent:

An InsiderAdvantage / Majority Opinion survey conducted Oct. 24-25 of 400 registered voters in Georgia indicates that a rematch of U.S. Sen. Saxby Chambliss versus former Sen. Max Cleland, who lost to Chambliss in 2002, might be the Democratic Party’s strongest hope for reclaiming the Senate seat.

The poll asked voters which candidate they favored if given a choice between Chambliss and Cleland.

The results:

Chambliss - 36 percent
Cleland - 24 percent
Undecided - 40 percent

The survey showed some interesting numbers, said InsiderAdvantage CEO Matt Towery, noting that while white voters were decided at a rate of nearly 71 percent, African-American voters were undecided at a rate of 73 percent. Similarly, he said, 73 percent of all Republicans were decided, with Chambliss receiving almost all of that vote, while 47 percent of Democrats remained undecided.

Chambliss still leads Cleland by 12 points--but, with 40% undecided, a lot could change.