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NORTH CHARLESTON, SC - JANUARY 14:  Republican presidential candidates (L-R) Donald Trump and Sen. Ted Cruz (R-TX) speak during a commercial break in the Fox Business Network Republican presidential debate at the North Charleston Coliseum and Performing Arts Center on January 14, 2016 in North Charleston, South Carolina. The sixth Republican debate is held in two parts, one main debate for the top seven candidates, and another for three other candidates lower in the current polls.  (Photo by Scott Olson/Getty Images)
NORTH CHARLESTON, SC - JANUARY 14:  Republican presidential candidates (L-R) Donald Trump and Sen. Ted Cruz (R-TX) speak during a commercial break in the Fox Business Network Republican presidential debate at the North Charleston Coliseum and Performing Arts Center on January 14, 2016 in North Charleston, South Carolina. The sixth Republican debate is held in two parts, one main debate for the top seven candidates, and another for three other candidates lower in the current polls.  (Photo by Scott Olson/Getty Images)

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Political panel: Tough day for Ted Cruz in Iowa

In the battle for Iowa's Republican voters, Ted Cruz had a rough Tuesday. Donald Trump won a big endorsement today, on the same day Iowa Gov. Terry Branstad said he hoped Cruz was defeated in the caucuses.

Political panel: Tough day for Ted Cruz in Iowa

In the battle for Iowa's Republican voters, Ted Cruz had a rough Tuesday. Donald Trump won a big endorsement today, on the same day Iowa Gov. Terry Branstad said he hoped Cruz was defeated in the caucuses.