Same polling firm has Carson ahead in Iowa after 1st debate, Fiorina second, and Trump 3rd. They are always outliers.
I have seen many outlier polls (like the one that had The Donald at 40%) but the Trump Mania Syndrome Crowd still fawned over it 9and other outlier polls) though.
But there is no reason to doubt this poll.
She knocked it out of the park in the debate.