Love living rural. I have never had anyone taking polls in person. By the time they drive out here, see all 4 doggie doorbells I'd be thinking they really wouldn't care what I owned.
But true, I never gave thought about the accuracy since to my knowledge I don't get phone polls either. Once in awhile someone gets to say "I am taking a poll" and that's when they hear a click. I think they keep numbers of folks willing to take part and consistantly call them. Not that I blame them as "click" doesn't say much.