CHARLOTTE, SC (CBS) -- The pivotal South Carolina primary is just hours away and attacks are flying in every direction on the campaign trail. Rick Santorum and Ron Paul are arguing they're still in this contest while the polls show a two man race between Newt Gingrich and Mitt Romney.
Mitt Romney dodged raindrops on this last day of campaigning before Saturday's South Carolina primary. He promised supporters brighter days ahead if he wins. Romney says, "I'm going to make sure the next generation has an even more prosperous future than I've enjoyed. I love this country; I love you for coming out in the rain.. Let's go win!!"
Once the clear frontrunner, Romney is now neck and neck with Newt Gingrich. But that was before Gingrich's ex-wife told media that her former husband said he wanted an open marriage.
Gingrich scored points with the audience at Thursday's debate with his response. He says, "Let me be quite clear, the story is false every personal friend I have who knew us in that period says the story was false."
Gingrich canceled his first appearance Friday his campaign said the crowd was too small and it allowed him spend more time visiting a children's hospital.
Ron Paul did appear, saying the debates are helping his campaign. He says, "Debates have always been very helpful in promoting what I've been talking about - promoting economic policy, changing foreign policy."
Rick Santorum continues to push himself as the only candidate for conservative voters arguing both Romney and Gingrich have supported healthcare plans that resemble President Obama's. He says, "Once the government has your health, they have your pocket book and we are no longer free."
The four candidates have just hours left sway voters. A recent poll suggests about half have yet to make up their minds.
Since 1980, the first year South Carolina held a GOP primary, the winner has gone on to clinch the Republican Party nomination.