There could be a record turnout at the polls on this primary day in South Carolina.

FOX's Rachel Sutherland reports from South Carolina:

Polls heading in to today's primary show 'The Donald' could make South Carolina 'Trump Country' by tonight. It's Marco Rubio who has the backing of South Carolina Governor Nikki Haley who campaigned for the Florida Senator yesterday.

(Haley) "I want a President that's going to bring a conscience back to Republicans. Remind them who they were and why they're there."

Elections officials are expecting an enormous turnout at the polls. As of yesterday a record number of voters had cast absentee ballots.

In Columbia, South Carolina, Rachel Sutherland, FOX News.