be seen more than just a social conservative candidate. >> game on. >> reporter: rick santorum may have surged on a wave of evangelical support in iowa, but now he has to show south carolina conservatives he's not just a one-state sensation. they're looking for someone who can beat president obama. >> that's what they're saying, that's right. >> reporter: they're looking for a winner. >> that's exactly right. >> reporter: across the crowded republican field, conservative positions on social issues like gay marriage and abortion are a given. southern politics and reridge gone expert james guth says he can't win south carolina on faith alone. >> reporter: when it comes to values, he's in. >> i think he's in good stead with south carolina republicans. >> reporter: then he's got to show them he's got what it takes on the economy. >> he has to be more than a one issue or two-issue candidate. >> >> reporter: defense? >> that's very important here.