Some of that hinges on making sure Democrats don’t get any ammunition since Graham’s seat is a virtual lock for Republicans. A Democrat can’t attack his GOP opponent for not being conservative enough, but character attacks can transcend party lines, said College of Charleston political scientist Gibbs Knotts.

“To make more personal accusations, that’s a difficult thing and they can stick harder. Also, those strategies are a lot harder to make work. And the last thing Republicans want to do is hand a solid seat back to Democrats,” Knotts said.

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