As the Acela Corridor fixates on Donald Trump’s proposal to ban Muslim immigration, the Republican front-runner’s supporters in Iowa believe he is building a movement there that will blow away doubts about his strength in the first-voting state.

Here is the conventional wisdom: Yes, Trump has a lot of support in Iowa, but the people who tell pollsters they like Trump are not the type to leave their homes on a snowy night in February to attend a caucus and vote for him.