Savannah-based congressman Jack Kingston is getting some support in his bid for the U.S. Senate in Georgia by way of a new ad from the Chamber of Commerce. The ad calls Kingston a "consistent conservative." Watch it below:

Kingston, a 12-term House member, earned the Chamber's endorsement for the GOP primary earlier this month.

Facing Kingston in the May 20 primary is his chief rival, businessman David Perdue, as well as former secretary of state Karen Handel and fellow congressmen Paul Broun and Phil Gingrey. Perdue has led the field in most recent polls, but with five major candidates all vying for the nomination, the winner isn't expected to get the 50 percent required to avoid a runoff. The top two vote-getters will proceed to a runoff election on July 22. Currently, Kingston has been consistently running in second place, while Handel, who lost a close runoff primary election for governor in 2010, has seen a small boost in her poll numbers in recent weeks.

The eventual GOP nominee will likely face Democrat Michelle Nunn, who is running far ahead of her primary opponents. In a couple of TV ads, Nunn has so far cast herself as an independent moderate, mentioning her work with "President [George H.W.] Bush" as the CEO of the Points of Light Foundation and reminding Georgia voters of her father, former senator Sam Nunn. Some in the Georgia media have noted that the younger Nunn is treating her primary "as a victory lap" and are grumbling that she is skipping primary debates.

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