Republican presidential candidates face off in third debate (Photos)

Donald Trump, center, poses for a photo with Denver attorney Gabriel Schwartz (with hat) and others following the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

Rand Paul pauses after an interview in the spin room following the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Brennan Linsley)

Donald Trump, left, speaks as Ben Carson looks on during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Marco Rubio, right, watches as Jeb Bush speaks during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Marco Rubio, right, and Jeb Bush, argue a point during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Ben Carson, right, and Donald Trump laugh together during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Ted Cruz, right, makes a point as Carly Fiorina looks on during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Donald Trump makes a point during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Republican presidential candidate, Sen. Ted Cruz, R-Texas, speaks with members of the media after the CNBC Republican presidential debate Wednesday, Oct. 28, 2015, at the Coors Event Center on the University of Colorado campus in Boulder, Colo. NO SALES; MANDATORY CREDIT (Jeremy Papasso/Daily Camera via AP)

Jeremy Papasso/Daily Camera via AP

Jeb Bush makes a point during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Jeb Bush, center, stands with Mike Huckabee, left, and Marco Rubio during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Ben Carson, right, watches Donald Trump during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Donald Trump, center, makes a point as Marco Rubio, left, and Ben Carson look on during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Chris Christie makes a point during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

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 appear during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Brennan Linsley)

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, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Brennan Linsley)

AP Photo/Brennan Linsley

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, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Brennan Linsley)

AP Photo/Brennan Linsley

Republican presidential candidate Rick Santorum, right, looks on as Bobby Jindal speaks during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Lindsey Graham speaks during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Republican presidential candidates, from left, Bobby Jindal, Rick Santorum, George Pataki, and Lindsey Graham take the stage during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Republican presidential candidate Lindsey Graham, right, makes a point while George Pataki looks on during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Bobby Jindal, left, looks on as Rick Santorum makes a point during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Republican presidential candidate Lindsey Graham, right, makes a point as George Pataki reacts during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

Republican presidential candidates, from left, John Kasich, Mike Huckabee, Jeb Bush, Marco Rubio, Donald Trump, Ben Carson, Carly Fiorina, and Ted Cruz take the stage during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

George Pataki, left, speaks as Lindsey Graham looks on during the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Mark J. Terrill)

AP Photo/Mark J. Terrill

A crew member checks the candidate podiums at the venue for the Oct. 28 CNBC Republican presidential debate, Tuesday, Oct. 27, 2015, inside the Coors Events Center at the University of Colorado in Boulder, Colo. Republican presidential candidates taking the debate stage Wednesday in Colorado are hoping to carry momentum from a 2014 U.S. Senate victory in this toss-up state where independent voters outnumber the electorate from both major parties. (AP Photo/Brennan Linsley)

AP Photo/Brennan Linsley

Workers prepare the stage before the CNBC Republican presidential debate at the University of Colorado, Wednesday, Oct. 28, 2015, in Boulder, Colo. (AP Photo/Brennan Linsley)

AP Photo/Brennan Linsley

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