At least you can ignore them dropping through the letterbox. Yesterday evening I was playing World of Warcraft, grouped with a couple of other players slaughtering Undead Plague Eaters in a tricky corner when the doorbell went. I tucked my character in a safe corner, told the others and went to answer it ... only to find a wretched grinning suit with a big blue rosette and a clipboard standing at my doorstep. I very quickly told him that my voting intentions were not to his liking and scuttled back - fortunately my character was still alive and the rest of the group hadn't abandoned me. Electioneering can really get in the way of computer use.