DailyKos’ Markos Moulitsas ended his site’s relationship with the polling outfit Research 2000 after Nate Silver’s most recent pollster ratings listed them as wholly unreliable. Then a group of “statistics wizards” approached Kos with evidence suggesting that Research 2000 had manipulated — or maybe just made up — some or all of their poll data.
You can examine the report here. As a non-statistician, I can only say that it all looks convincing. And as Moulitsas writes, Research 2000 has refused to respond to the report or provide Kos with their raw data.
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.
Kos also plans on suing them. While this is undoubtedly embarrassing, it’s admirable that Kos isn’t defending the shoddy work his site published.