I am Shocked! Shocked!
I once did such a thing myself. I was asked to call in and put a question to Howard Dean. It was a question on agricultural policy and I am not an ag-policy wonk. However, the person who put me up to it was most likely doing on instruction from higher up the chain of command and the question was designed to pick on Howard Dean's natural favoritism for Vermont farmers over Wisconsin farmers.
National presidential politics is as much show business and image as it is about hard cold facts. Of course Hillary staffers are out looking for people to pitch softballs to her. Be dang sure the rest of the candidates are doing likewise.