Ted Cruz-themed jacket pins being sold outside Tiger Den restaurant in Lenox, Iowa, on Nov. 28, 2015.
Republican presidential candidate Ted Cruz addresses voters during a campaign stop at Casey’s General Store in Chariton, Iowa, on Nov. 28, 2015.
A woman carries a Ted Cruz campaign sign after Cruz addressed voters at Lamoni High School in Lamoni, Iowa, on Nov. 28, 2015.
Republican presidential candidate Ted Cruz speaks with a voter during a campaign stop at Greggo’s Pizza & Sandwiches in Mount Ayr, Iowa, on Nov. 28, 2015.
Voters listen to Republican presidential candidate Ted Cruz during a campaign stop at Tiger Den restaurant in Lenox, Iowa, on Nov. 28, 2015.
Republican presidential candidate Ted Cruz’s hand rests on the back of a supporter as they take a selfie after a campaign stop at Lamoni High School in Lamoni, Iowa, on Nov. 28, 2015.
Republican presidential candidate Ted Cruz thanks Sharon Woods, the supervisor of Casey’s General Store in Chariton, Iowa, for hosting a campaign event inside the store on Nov. 28, 2015.
A voter holds a stuffed elephant toy for Republican presidential candidate Ted Cruz to sign at a campaign stop at Casey’s General Store in Chariton, Iowa, on Nov. 28, 2015.
Republican presidential candidate Ted Cruz is seen through a cellphone screen as he poses for a photograph with a voter during a campaign stop at Casey’s General Store, in Tama, Iowa, on Nov. 29, 2015.
Republican presidential candidate Ted Cruz gestures during an interview with a Guardian US reporter in Amana, Iowa, on Nov. 29, 2015.
Tracy McClure (from left) Denise Lopez, and Alexis White, employees of Casey’s General Store in Tama, Iowa, pose for a photograph during a campaign stop of Republican presidential candidate Ted Cruz on Nov. 29, 2015.
Republican presidential candidate Ted Cruzaddresses worshippers during a Sunday morning serviceat Christian Life Assembly church in Des Moines, Iowa, on Nov. 29, 2015.
Copies of the United States Constitution handed by the campaign of Republican presidential candidate Ted Cruz sit on a table during a campaign stop at Tiger Den restaurant in Lenox, Iowa, on Nov. 28, 2015.
Republican presidential candidate Ted Cruz(left) leaves Casey’s General Store in Chariton, Iowa, after a campaign stop on Nov. 28, 2015.