I don't know. He could still hurt Rand a lot if he wins Iowa. Iowa seems like a must win state for Rand. And Huckabee's overall favorability ratings are still really good among Republicans.
I don't see Huckabee getting much support in the northeast, north central, or west coast. Huckabee has support in the southeast and southeastern part of the Midwest and that's about it.
Iowa is not must win for Rand the way it was for Ron.