Now (having in the meantime made a trip to Weymouth to see my precious child running in the rain and swimming in the cold sea, and myself conducting an impromptu Buster Keaton-style trick with a plank of wood (you know the one - step on one end, other end comes up and hilariously hits subject in face), escaping anything more serious than the recurrence of an old "war wound") I have found the dates in italicised fine print at the bottom of Page 9 of the Observer.
The poll was conducted on "14-20 June". So the last day of polling was the very day of the Guardian article about "JobsforLords", before the story had a chance to enter most of the public's consciousness (unless Ipsos MORI randomly chose hundresds of avid Grauniadistas to interview on that day). This is a bit of a relief, although I know I am clutching at straws. The three point drop can't be seen as a reaction to "JobsforLords" or even "JobforPaddygate" and those of us who are ridiculous "glass half full" merchants still hold out hope that the farrago might have given us a tiny little bounce. Forthcoming polls might tell us. It's pathetic, I know, but some of us are ever hopeful.