Alas, this also means we have a lot of small parties much less cool than the Sex Party :(.

Well, we've no shortage of lunatic fringe over here, either. (I'm pretty sure there's an American "Family First" party too, though I'm not googling to confirm.) But somehow we never seem to get the correspondingly fringe-but-cool groups like your Sex Party, or the Pirate Party, or even the Monster Raving Loony Party. Or if we do, I never get the memo. ;-P