State Rep. Robert Martwick, himself a property tax lawyer, recalled a time that a person came to him in hopes of getting an extra political advantage in lowering his taxes. “I had somebody walk into my office and say, ‘Hey, I hear you’re the guy to see to get a special deal,’ ” the Chicago Democrat said. “And I told him straight up, ‘Well, you’re in the wrong place. All I can do is to assure you that you pay no more and no less than you’re required to pay. All I can do is get you accurate. I don’t get anybody deals, and if you’re looking for it, you’re in the wrong place.’ ”