Conspiracy theories are all generic, like ethnic jokes, all you need is a theme, a sinister interpretation, and a willingness to throw Occam's Razor into the garbage. I've often been tempted to try and make one from scratch and see if it got wings, I'm still pretty sure I invented the Dihydrogen Monoxide Poisoning gag, and I know how to load something up with believable technobabble. Maybe something claiming aliens had created the new minor planets in an attempt to control humanity's future by altering astrological principals?

Wait, I've got it... the NWO has infiltrated NASA and suppressed the Discovery of Planet X, in order to throw off astrologers while using their own more accurate predictions to help them rule the world.

I don't think the belief values should be taken to seriously, poll firms use these things for calibration curves on top of keeping their name recognition and revenues up in off years. Subtract out the lowest scores for unsure and do and you probably know the real values of belief versus people being dicks on the phone, getting their answer backwards, or a typo by the recorder... though the results are still pretty sad. Some of those aren't exactly conspiracy believers either, "Do you believe aliens exist?" one is going to nail not just the Roswell anal-probe crew but probably most scientists, geeks, etc. I wish they'd included education background on this one instead of just age, gender, party.