Donna Brazile: Ted Cruz is a show horse

WASHINGTON, DC - OCTOBER 16:  U.S. Sen. Ted Cruz (R-TX) answers questions from the media after meeting with Republican senators regarding a bipartisan solution for the pending budget and debt limit impasse at the U.S. Capitol October 16, 2013 in Washington, DC. The Senate announced that it had reached a bipartisan deal on funding the federal government and the extending the nation's debt limit after 16 days of a government shutdown.  (Photo by Andrew Burton/Getty Images)

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    Donna Brazile: Ted Cruz is a show horse

CNN commentators debate whether Sen. Ted Cruz could be the 2016 Republican presidential nominee.