Their has not been a new Iowa poll done since the debate. Lets see what the Iowa polls look like at the end of next week. I think you will see Trumps numbers crumble now that he has pointed himself as the defender of New York social liberalism.
Cruz is desperate. He would never have started in on all the NY Liberal stuff with his Goldman & TPA baggage unless he really had to.
I suspect Iowa will stay close but it’s clear national sentiment has shifted strongly to Trump.