It's not a big deal what I have proposed in You be a Congressional candidate.
You can make a difference for campaign finance reform in your Congressional district.
You don't have to be the candidate.
Just start talking up the idea with your friends. Find people in your Congressional district who are willing to do volunteer Internet activity. It doesn't have to be a lot. Two hours a week by a volunteer would be meaningful.
Deciding on who should be the candidate can come later.
Getting organized is most important for now.
Once you get going, things will come naturally.
Update: Can MAYDAY do this?