Ted Cruz and Donald Trump are way ahead in the race to win the Iowa caucuses, perhaps to capture the Republican nomination too. Both appeal to alienated conservative voters who say they've had it with the Republican establishment.
Yet their supporters are different. In Iowa, which holds the first presidential contest on Feb. 1, Trump, the New York businessman and reality-TV star, is more popular with those who say they're most concerned about economics or guns. Senator Cruz, of Texas, does better with voters who are religious conservatives and say they care most about values. These distinctions are worth watching as the two top Republican candidates square off with five others in the party's sixth presidential debate Thursday night in Charleston, South Carolina.