I had the pleasure of living in NY during a good chunk of the Giuliani administration. [[I am not attempting to start a conversation about his policies here). No one doubts he had effective control of the government, something which people had said before his arrival wasn't possible [["ungovernable" was often used to describe NYC in the 80's and 90's). Many of his key people were with him when he was US Attorney or the in the Justice Dept beforehand. Taking your key people with you can really help you govern. You know people's strengths and what projects they might be able to handle.