Trump was also winning ENTRY polls going away, but somehow ended up losing the Iowa to Cruz.
Hope springs eternal in the human breast;
Man never is, but always to be blessed:
The soul, uneasy and confined from home,
Rests and expatiates in a life to come.
Alexander Pope, An Essay on Man
Trump wasn't up 15-20 points in Iowa. Trump will win NH, the only questions are by how much and who takes the silver?