Here's a new strategy.

About halfway through the above web video from Georgia GOP Senate candidate David Perdue, his four top primary opponents are portrayed as crying babies.

The four babies don t-shirts with the first names "Karen," "Jack," "Paul" and "Phil" -- for former secretary of state Karen Handel and Reps. Jack Kingston, Paul Broun and Phil Gingrey, respectively. "Paul" and "Phil," whose real-life counterparts are doctors, are wielding stethoscopes, while the "Jack" is holding glasses like the bespectacled congressman he portrays. "Karen" is wearing a pearl necklace.

"It's hard to believe that my opponents have been in office for 63 years," Perdue says, adding: "If these politicians knew how to make a difference, wouldn't they have done it already?"

The ad was produced by well-known GOP ad-maker Fred Davis, who is perhaps best-known for his offbeat ads -- including "Demon Sheep" and "I'm Not a Witch."

Perdue, a businessman and political newcomer, is the cousin of former Georgia Gov. Sonny Perdue (R). A recent poll showed him behind the four candidates he depicts as babies in his ad, but the crowded race remains anybody's game.

Waiting in the general election is another political newcomer with a well-known political relative -- Michelle Nunn, the daughter of former senator Sam Nunn (D-Ga.).

Related: Michelle Nunn, Jason Carter hope to rechart the course of Georgia politics.