We're (at least, I myself feel lucky, the husband not so much) blessed to live in a very conservative area, so no canvassers anywhere in sight.
2008 was a different matter. I finally had to post a sign on my front door saying, "Don't even think about knocking on this door for Obama!" It really did get that bad. I would even get accosted at intersections by OFA canvassers beating on my car windows. Of course, it was Durham, NC and it's a liberal sinkhole.