Maybe contributing a few bucks to support the campaign of your fave presidential candidate is a very American thing to do -- playing your tiny-but-oh-so-valuable little role in this fine democratic system.
On the other hand, maybe you're just paying for a crapload of donuts (and, by the way, would you really support a candidate whose staff chose Dunkin' Donuts over Krispy Kremes?) and filling the coffers of overpaid and generally ineffectual corporate p.r. agencies.
Think maybe I'll do something more useful with that $25, like buy myself a donut and download 24 songs from iTunes.