Photos:: Republican presidential debate in South Carolina

The main stage of the Republican debate.

Dr. Ben Carson.

Marco Rubio, left, and Donald Trump.

Ted Cruz makes a point in the debate.

John Kasich.

Chris Christie, left, and Jeb Bush talk during a break.

The field for the prime-time Republican debate.

Dr. Ben Carson.

Chris Christie.

Jeb Bush.

The candidates before the debate.

Rick Santorum speaks to reporters after the first Republican debate.

Carly Fiorina after the first debate.

Mike Huckabee after the first debate.

Rick Santorum speaks to reporters.

Mike Huckabee, left, Carly Fiorina and Rick Santorum after the first debate.

The field in the first Republican debate.

Rick Santorum makes a point in the debate.

Carly Fiorina speaks in the debate.

Mike Huckabee participates in the debate.

Mike Huckabee, Carly Fiorina and Rick Santorum before their debate.