Rick Santorum is dropping off the New Hampshire campaign trail today.

He's stumping in South Carolina instead.

Santorum flew to Greenville, S.C., right after this morning's debate in Concord, N.H., hoping his social conservative message will resonate more strongly in the South Carolina primary on Jan. 21.

It's a quick trip; Santorum returns tonight to New Hampshire, where he is trailing front-runner Mitt Romney in Tuesday's primary. Santorum lost the Iowa caucuses to Romney by just eight votes.

During his trip to South Carolina, Santorum will accept the endorsement of prominent evangelical Gary Bauer.

"While we have many fine candidates in the competition I believe senator Santorum best personifies the Reagan-inspired conservatism that unites the GOP," said Bauer, chairman of the Campaign for Working Families.

Greenville and the surrounding area is home to many social conservatives and evangelical Republicans.

Another candidate, Rick Perry, is also campaigning in South Carolina.