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 New Jersey Gov. Chris Christie responds to a question 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 Ohio Gov. John Kasichresponds to a question 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 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 moderators (L-R) Bret Baier, Megyn Kelly and Chris Wallace ask questions of the 2016 Republican presidential candidates at a GOP debate hosted by Fox News, January 28, 2016, in Des Moines, Iowa. Photo by Mike Theiler/UPI

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