Unlikely political career... meaning he went from a career of professional comedy and television entertainer to a position of serving the public in government... it is not a normal career path of a political person. It is not a usual progression to an official office in the government.
Progressive darling..a person advocating or implementing social reform or new, liberal ideas that people liked, from popular comedian.
Call out...an instance of being summoned, especially in Donald Trump's case where he was being asked to give answers to his sexual assault also Roy Moore was asked to answer or explain the charges of sexual assault against him.. it is being asked publicly to answer questions.