Sen. Graham's Approval Rating Drops in South Carolina

Challengers still not posing a serious threat for 2014 election

Sen. Lindsey Graham's approval is slipping in South Carolina, two new polls show, but the challengers for his Senate seat still aren't offering him a significant threat.

Graham's approval in his home state has dropped nearly 30 points among conservatives in a new Winthrop University poll. Among Republicans and GOP leaners, 45.2 percent approve of the job Graham is doing, down from 71.6 percent in February. His approval among all registered voters stands at 37.4 percent, with 48.5 percent disapproving.