No, not exactly. They tell you their ideas. If you like thier ideas, then you vote for them. Its more of a republic than a democracy. Once in office, they will listen to your ideas and complaints and weigh them in thier decision making process. You can provide feedback and information that helps your rep make an informed decision. But ultimately it is your reps decision and they may or may not decide an issue in favor of the popular opinion , (ie. the loudest and squeakiest wheels).