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DES MOINES, IA - FEBRUARY 01:  Republican presidential candidate Donald Trump speaks at his Iowa Caucus night gathering February 1, 2016 in Des Moines, Iowa.   Sen. Ted Cruz (R-TX) has won the Iowa Republican Caucus.  (Photo by Scott Olson/Getty Images)
DES MOINES, IA - FEBRUARY 01:  Republican presidential candidate Donald Trump speaks at his Iowa Caucus night gathering February 1, 2016 in Des Moines, Iowa.   Sen. Ted Cruz (R-TX) has won the Iowa Republican Caucus.  (Photo by Scott Olson/Getty Images)

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    Breaking down Trump's Iowa loss

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Breaking down Trump's Iowa loss

CNN's Brian Stelter and Alex Castellanos discuss the repercussions of Trump's absence at last week's Iowa GOP Debate.

Breaking down Trump's Iowa loss

CNN's Brian Stelter and Alex Castellanos discuss the repercussions of Trump's absence at last week's Iowa GOP Debate.