Like I said, there is a grey area here, but if I were you, I would declare your intention to your chain of command, ensure you stay firmly inside your arcs (no uniform, never get involved in discussions about CF policy etc.), and perhaps minimize the possibility of accidents by taking some sort of position where you stay inside the office and stuff envelopes or post pictures on the web site.
You may have the best of intentions, but most political parties play very rough these days, and if the opposition thinks they can score points against your "team" by using you or your afilliation with the CF against them, don't think for a second they won't. (One party thinks it's OK to steal $100 million tax dollars, so you are just road kill in the big scheme of things).
Remember, be careful out there.