Bring the glitter. If anyone asks, tell them you're the representative of the F.A.O.M.C. (that is, Fairys And Other Magical Creatures) here to negotiate with the "BO" a plan of action towards the illegality of pixie dust if he is elected.

Or you could wear a Lincoln beard and hat. I think that would just be awesome.

But don't put PETA on a shirt unless you want to scare him away, yaknow?

I like the "I ♥ BO" idea. :]