I do not believe the polls, they were bigtime wrong in Iowa. I do not believe Cruz or his campaign did anything wrong.
They may be wrong, but Cruz needs to be at least 3rd. If he is any lower they will treat it as a loss. Same with Trump and Rubio. They all must be in top 3 or it will be considered a loss. The rest of the group 1 needs 4th and the rest will be done.