trump took aim at muslims. >> donald j. trump is calling for a total and complete shutdown of muslims entering the united states until our country's representatives can figure out what the hell is going on. >> reporter: and his poll numbers did not change. then in february, he spoke up on how the u.s. fights isis. >> i would bring back waterboarding and a hell of a loss worse than waterboarding. >> reporter: the polls did not budge. in may he went after the father of ted cruz in a bizarre claim. >> his father was with lee harvey oswald prior to oswald being shot. >> reporter: and trump's polls still stood firm. sure trump's support has gone up and down, and his favorability is unusually high for a major party candidate. but his supporters have shown fierce loyalty and the polls suggest what others see as outrageous, they see as courageous, plain spoken truth. so he tweets a picture of his