DES MOINES, IA - FEBRUARY 01:  Republican presidential candidate Sen. Ted Cruz (R-TX) reaches out to supporters after winning at the caucus night gathering at the Iowa State Fairgrounds on February 1, 2016 in Des Moines, Iowa. Cruz beat out businessman Donald Trump and Sen. Marco Rubio (R-FL), who finished just behind Trump.  (Photo by Christopher Furlong/Getty Images)