GOP presidential debate at the University of Colorado

Presidential candidate Ben Carson speaks to the media in the spin room after the CNBC Republican Presidential Debate at University of Colorado’s Coors Events Center in Boulder, Colo.

Rand Paul pauses after an interview in the spin room following the CNBC Republican presidential debate at the University of Colorado in Boulder, Colo.

Presidential candidate Sen. Marco Rubio (R-FL) smiles on stage with family members after the CNBC Republican Presidential Debate at University of Colorados Coors Events Center in Boulder, Colo.

Presidential candidate Carly Fiorina is seen gesturing on a television inside the spin room during the CNBC Republican Presidential Debate at University of Colorado’s Coors Events Center in Boulder, Colo.

Donald Trump, right, checks the time with Jeb Bush during the CNBC Republican presidential debate at the University of Coloradoin Boulder, Colo.

Republican presidential candidates, from left, John Kasich, Mike Huckabee, Jeb Bush, Marco Rubio, Donald Trump, Ben Carson, Carly Fiorina, Ted Cruz, Chris Christie, and Rand Paul take the stage during the CNBC Republican presidential debate at the University of Colorado in Boulder, Colo.

Republican Presidential hopeful Carly Fiorina speaks during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Republican Presidential hopefuls (L-R) Marco Rubio, Donald Trump, Ben Carson, and Carly Fiorina look on during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Ben Carson speaks during the CNBC Republican presidential debate at the University of Colorado in Boulder, Colo.

Republican presidential candidates, from left, John Kasich, Mike Huckabee, Jeb Bush, Marco Rubio, Donald Trump, Ben Carson, Carly Fiorina, Ted Cruz, Chris Christie, and Rand Paul take the stage during the CNBC Republican presidential debate at the University of Colorado in Boulder, Colo.

Republican presidential candidates, from left, Carly Fiorina, Ted Cruz, Chris Christie, and Rand Paul take the stage during the CNBC Republican presidential debate at the University of Colorado in Boulder, Colo.

Republican presidential hopeful Donald Trump speaks as Ben Carson look on during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Color.

Republican Presidential hopeful John Kasich speaks during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Republican Presidential hopeful Donald Trump (2L) speaks as Marco Rubio (L), Ben Carson (C), Carly Fiorina (2R), and Ted Cruz look on during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Republican Presidential hopeful John Kasich (L) speaks as Mike Huckabee looks on during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Republican Presidential hopeful Marco Rubio (L) speaks as Donald Trump (C) and Ben Carson look on during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Republican Presidential hopeful Jeb Bush speaks during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Presidential candidates Ohio Governor John Kasich (L-R), Mike Huckabee, Jeb Bush, Sen. Marco Rubio (R-FL), Donald Trump, Ben Carson, Carly Fiorina, Ted Cruz (R-TX), New Jersey Governor Chris Christie, and Sen. Rand Paul (R-KY) pose for a photo at the CNBC Republican Presidential Debate at University of Colorado’s Coors Events Center in Boulder, Colo.

Republican Presidential hopeful Rand Paul speaks during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Republican Presidential hopeful Donald Trump speaks during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Republican Presidential hopeful Ted Cruz gestures during the CNBC Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colo.

Presidential candidates Ohio Governor John Kasich (L-R), Mike Huckabee, Jeb Bush, Sen. Marco Rubio (R-FL), Donald Trump, Ben Carson, Carly Fiorina, Ted Cruz (R-TX), New Jersey Governor Chris Christie, and Sen. Rand Paul (R-KY) take the stage at the CNBC Republican Presidential Debate at University of Colorados Coors Events Center Boulder, Colo.

Bobby Jindal enters the spin room following the CNBC Republican presidential debate at the University of Colorado in Boulder, Colo.

Lindsey Graham, right, talks with reporter Dana Bash following the CNBC Republican presidential debate at the University of Colorado in Boulder, Colo.

Republican presidential candidate George Pataki (2nd R)) speaks while Sen. Lindsey Graham (R) (R-SC) Rick Santorum (2nd L) and Louisiana Gov. Bobby Jindal look on during the CNBC Republican Presidential Debate at University of Colorado’s Coors Events Center in Boulder, Colorado.

Republican Presidential hopeful Lindsey Graham gestures during in the CNBC Republican undercard Presidential Debate at the University of Colorado in Boulder, Colorado.

Republican presidential hopeful Bobby Jindal gestures during the CNBC undercard Republican Presidential Debate at the Coors Event Center at the University of Colorado in Boulder, Colorado.

Republican presidential hopeful George Pataki gestures during the CNBC Republican Presidential Debate.

Republican presidential candidate Rick Santorum speaks while George Pataki looks down during the CNBC Republican Presidential Debate at University of Colorado’s Coors Events Center in Boulder, Colorado.

Presidential candidates Louisiana Gov. Bobby Jindal, left, Rick Santorum, George Pataki and Sen. Lindsey Graham take the stage for the CNBC Republican Presidential Debate.

Republican presidential hopeful Rick Santorum arrives backstage for the CNBC Republican Presidential Debate.

Activists demonstrate outside the CNBC Republican Presidential Debate at University of Colorado’s Coors Events Center. Fourteen Republican presidential candidates are participating in the third set of Republican debates.

Republican presidential candidates Bobby Jindal, left, Rick Santorum, George Pataki and Lindsey Graham take the stage during the CNBC Republican Presidential Debate.