Jeb Bush says people who think he's dropping out of the race have 'no clue'

Jeb Bush is keeping mum on rumors that he plans to drop out of Republican presidential race if he doesn't have a strong showing in Saturday's South Carolina primary.

"My campaign is doing great," he said Saturday morning in South Carolina. The former governor of Florida said he plans to "work as hard as I can till 7 p.m.," and refuses to "feed the speculation of people who have no clue about my campaign."

Bush stopped by a polling place in Daniel Island with his son, Jeb Jr., and Sen. Lindsey Graham (R-S.C.), and was greeted by people excited to see him — even though they had no plans to vote for him. Resident Julie Thornton told the Los Angeles Times she stopped to take a photo with Bush, but felt like a "hypocrite" because she's voting for Marco Rubio. "I think he is more conservative and probably a bigger fighter than Jeb," she said. "I do think Jeb is a good human being, but I'm not sure would be able to fight and do what he's sent up there to do."