Why don't you just pass a realm law, and punish anyone who breaks it? They are completely non-binding in any game mechanics fashion. And you can't stop anyone from taking a straw poll anyway.
True, but people seem to be getting all sorts of upset when I create a referendum. "You're not the judge! You're playing judge! You can't create laws! Your referendum gave me the clap!"
Actually, I would prefer it if someone used that last one, instead of acting like we're in a Tyranny where referendums are illegal, or claiming that I'm some sort of tyrant for starting a referendum. The crazies aren't in Outer Tilog--they're in Oritolon.