Republican presidential candidate Sen. Ted Cruz (R-TX) speaks at a watch party as his wife, Heidi Cruz, and daughters Catherine Cruz and Caroline Cruz and colleagues Carly Fiorina (R) and Lt. Gov. Dan Patrick (L) look on, March 15, 2016 in Houston, Texas. Cruz is in a tight race with Donald Trump in the Missouri GOP primary, while Trump took Florida, North Carolina, and Illinois. Gov. John Kasich won his home state of Ohio.