Mano a mano, Ted Cruz and Marco Rubio lead the last pre-caucus tangle in Iowa Texas By W. Gardner Selby January 29, 2016 Mano a mano? That would have been Sens. Marco Rubio and Ted Cruz during the last Republican presidential debate before the Iowa caucuses. The two competing candidates landed up talking the most during the debate, according to tracking by the Austin American-Statesman‘s Chuck Lindell. Ahead: Fact checks of what hopefuls said steered by PolitiFact in Washington, D.C. See the latest fact checks by PolitiFact here. NOW: What merits a fact check? Our Sources See the latest fact checks by PolitiFact here. See PolitiFact's check of Ted Cruz's claim Barack Obama has degraded the U.S. military. See PolitiFact's look into Cruz's claim he hasn't personally insulted Donald Trump. Donald Trump, who declined to attend, spoke elsewhere in Iowa.