Limit all forms of campaigning to 3 weeks for incumbents and 5 weeks for newbies. Once you are in, do your job ONLY, or get fired. If you were actually doing work for the American Citizens you represent, people would already know, because they would see progress in their hometowns and where their concerns are. You would not need more than 3 weeks to inform that you are running again and that you had many successes and delivered quality service to your constituents.