DailyKos has published a report by "three statistics wizards showing, quite convincingly, that the weekly Research 2000 State of the Nation poll we ran the past year and a half was likely bunk."
"While the investigation didn't look at all of Research 2000
polling conducted for us, fact is I no longer have any confidence in any
of it, and neither should anyone else. I ask that all poll tracking
sites remove any Research 2000 polls commissioned by us from their
databases. I hereby renounce any post we've written based exclusively on
Research 2000 polling."
DailyKos will be filing suit against the polling firm "within the next day or two."
Update: Research 2000 President Del Ali to TPM: "I will tell you unequivocally that we conducted EVERY poll properly for
the Daily Kos."