Simple concept, yet most wont follow it. Ideally we would have at least 3-4 parties. We don't and frankly we probably never will. So simply vote out any incumbent. It really is that easy, if we do this (not that most will) the parties that be will be forced to pay attention. If every incumbent lost the shock would force them to pay attention. But go on voting for the same sad people who have been ripping you off for years.