RIDGEWAY -- Henry Dixon said he plans to vote for the Republican presidential nominee in November, but he is unsure which one of them to vote for on Jan. 21.

"I don't have a strong enough feeling to vote in the primary," he said Wednesday, moments after former Pennsylvania Sen. Rick Santorum's bus pulled into this Fairfield County town of about 300 residents north of Columbia.

Dixon said the economy is his No. 1 concern. He can't recall a Republican presidential candidate ever stumping here, but for Dixon that attention wasn't enough to seal the deal.

As the six GOP presidential hopefuls crisscross South Carolina during the next 10 days, they hope to reach -- and win over -- as many voters like Dixon as possible.

A recent survey found that almost half of Republican voters could change their minds before the primary. Former Arkansas Gov. Mike Huckabee and U.S. Rep. Tim Scott will hold a forum Saturday at the Sottile Theatre at the College of Charleston to focus on the state's undecided voters, and to give the candidates a chance to answer their questions.

Republican voter Robert Miller is typical of this GOP group, one that feels there is no great candidate but a lot of good ones.

Miller said he likes former Massachusetts Gov. Mitt Romney, but then again, Gov. Rick Perry of Texas has some fire too.

Still, Miller said he likes going back to the talking point Romney keeps using, about the perceived U.S. drift toward European-style socialism under President Barack Obama.

"I like that line," Miller said during a lunch stop for barbecue Wednesday. "If he sticks to his principles, I'm liking him most."

Jim Brown of Lexington, who attended Romney's rally Wednesday night, said he will vote in nine days, but not necessarily for Romney. "I'm not happy that he wavers and is not, as I call it, a solid conservative," Brown said.

Kevin Thomas, chairman of Fairfield County's GOP, said most Republicans he has talked with have an idea of who they will vote for, but the upcoming stretch of intensive campaigning here could shake things up.

"It's going to be nasty," he said. "I'm sure there will be some negative things coming out."

Most of Wednesday's rallies drew more die-hard supporters than tire-kicking undecided voters.

Jacob Hardin of Asheville, N.C., traveled to Columbia to hear Texas Rep. Ron Paul. Hardin said he was undecided until last summer, when he began to think about starting basic training soon in the Army.

"When I raise my right hand to defend the Constitution of the United States against all enemies foreign and domestic, the Constitution becomes alive for me," the 23-year-old said. "The Constitution means a lot to me right now."

Micah and Holly Moore of Ravenel made the trip to hear Paul speak and brought their four youngest children.

"We just go out to get the kids exposed to the message of freedom and liberty at as young an age as possible," he said. She added, "This is how we're celebrating our 10-year anniversary."

Thomas Moore of Columbia wore his black priest robes to Paul's event, though he said he spoke only for himself, not the Orthodox Church of America.

He said he is drawn to Paul's positions on freedom and individual responsibility. As for electability, Moore said, "They thought Jesus was a loser too. Couldn't win."