I’ll withold judgement because a lot of Shenanigans get played in Iowa. It often surprises. If the Iowa numbers look anything like the polls everyone should immediately drop out and endorse Trump because it’ll only get better for him. Iowa is probably one of his weaker primary states.
Iowa has long been considered a bell weather for elections.
The spread between Trump and the rest of the pack is HUGE. In this case, I don’t believe any of the opposition will pull forward to threaten him. No matter how much the Big Money and Big Media spin it.