GOP hopefuls debate in Iowa sans Trump (23 images)

2016 Republican presidential candidates Kentucky Sen. Rand Paul , New Jersey Gov. Chris Christie, retired neurosurgeon Ben Carson, Texas Sen. Ted Cruz , Florida Sen. Marco Rubio, Former Florida Gov. Jeb Bush and Ohio Gov. John Kasich attend a GOP debate hosted by Fox News, January 28, 2016, in Des Moines, Iowa. Billionaire businessman Donald J. Trump boycotted the event.

2016 Republican presidential candidate Texas Sen. Ted Cruz (L) responds to a question as Florida Sen. Marco Rubio listens during a GOP debate hosted by Fox News, January 28, 2016, in Des Moines, Iowa. Photo by Mike Theiler/UPI

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2016 Republican presidential candidate retired neurosurgeon Ben Carson (R) responds to a question as New Jersey Gov. Chris Christie listens during a GOP debate hosted by Fox News, January 28, 2016, in Des Moines, Iowa. Photo by Mike Theiler/UPI

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Fox TV modeators (L-R) Chris Wallace, Megyn Kelly and Bret Baier wait for the 2016 Republican presidential candidates to take the stage for a GOP debate hosted by Fox News, January 28, 2016, in Des Moines, Iowa. Photo by Mike Theiler/UPI

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2016 Republican presidential candidate former Florida Gov. Jeb Bush (R) responds to a question as Florida Sen. Marco Rubio listens during a GOP debate hosted by Fox News, January 28, 2016, in Des Moines, Iowa. Photo by Mike Theiler/UPI

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