Rep Jack Kingston (R-Ga.) on Wednesday became the third Republican to make a bid for retiring Republican Sen. Saxby Chambliss's seat, joining two of his House colleagues.

"I have a conservative voting record, but I come from an area that’s not necessarily Republican,” Kingston told the Atlanta Journal-Constitution. "And I can work with the other party and do that without selling out our philosophy."

Kingston joins Reps. Phil Gingrey and Paul Broun in a field that could grow in the coming months. Kingston is pitching himself as the most electable Republican.

"I think a Democrat has a shot under certain circumstances — if we come out of the primary divided and broke and bloody,” he said. “If I’m the nominee, a Democrat will not have that shot."

Rep. John Barrow and Michelle Nunn, the daughter of former senator Sam Nunn, are possible Democratic candidates.

Former secretary of state Karen Handel and Rep. Tom Price are two other Republicans who have been mentioned as potential candidate. The two are close political allies, so it's unlikely that both of them would run.