The term 'delegate' refers to an elected official that votes in accordance with their constituents. The term 'trustee' refers to an official that votes in the way they personally feel is the best course of action. I believe that if I was an elected official, I would probably be a bit of both a delegate and trustee, but mostly focusing my energy as a delegate. A lawmaker must take everything into consideration. Voting based on your own personal religious values despite your constituents inclinations is wrong. A member of congress works for the people.