The Fifth Republican Debate by the Numbers

— -- Terrorism, and how the candidates would take on ISIS, were front and center at the first Republican presidential debate following the deadly terrorist attacks in Paris and San Bernardino.

Held at the Venetian casino in Las Vegas, Nevada, the debate featured numerous bouts between Donald Trump and former Florida Gov. Jeb Bush on who had the right attitude to be Commander in Chief, in addition to a heated debate between Marco Rubio and Rand Paul over how to properly conduct the War on Terror.