There are only 3.2 million people in the entire state of Iowa, 752K of which are registered republicans. Under 120K (16%) of them even bothered to show up to caucus/vote, of which Trump only got roughly 56K+/- . That’s a paltry 7.5% of the entire states’ republican electorate. Don’t let the right-wing chants of “landslide” fool you, this was a pitiful showing.