I've noticed that the blogs are quite good at ferreting out the corruption and keeping up the pressure. maybe if the DNC or the DCCC and DRCC were willing to set up a kind of press/blog oversight advisory council (all on the interenet so it wouldn't cost anything - they'd just agree to address the concerns of said commitee or something, I don't know.) Anyway, the point is that for anyone to take seriously the notion that politians will reform themselves, I fully expect that the public will want to see them be willing to put their heads on the block.
Nothing would engender trust of the public more then a few public hangings of our own.