Most voters in Orangeburg, S.C., see Hillary Clinton as the more realistic democratic candidate — the one more likely to run for president. However, Bernie Sanders supporters are highlighting the challenges Clinton could face if she wins the nomination.

Voters like Curtis Mack feel Sanders appeals to their needs in a way that Clinton does not.

"Don't get me wrong, I like Hillary a lot," he says. "I think she resonates with a lot of older folks."

Clinton is facing a young voter problem, specifically young women. Some young feminists are rejecting the idea that they should vote for her simply because she is a woman.

Other voters feel that they can't trust Clinton because of decisions she has made in the past. She was paid $675,000 US for three speeches given to Goldman Sachs — a move that sparked concerns that she's influenced by special interests.

"That's one of those frustrating things," says Amy Davidson, who follows American politics for The New Yorker magazine, "You think, 'Couldn't you just have held back, held back on that?'"

Clinton says Sanders' campaign ideas may sound poetic but will never fly in the real world of governing. She offers herself to voters as capable and experienced.

However, voters often crave an emotional message from their candidate and some worry that, without one, competence alone might not carry Clinton to the White House.