A private citizen can't do a lot in the political domain. We might talk of gestures rather than actions. I made such a gesture recently in sending an email to the environmental authorities of the Australian opposition party stating that I would be happy to act as a liaison with the grand environmentalist pact of the French celebrity Nicolas Hulot. No reply (elementary rudeness). At the same time, although I'm not a French citizen (voter), I contacted the dynamic people in charge of the political campaign of Ségolène Royal, who stands a great chance of becoming the future president of France. I told them they might use the interesting idea of top-right-corner mini-banners... and they responded positively.
This morning, I went along to the municipal office in Choranche to lodge my bulky application for French citizenship.