07/06/2010 02:59 pm ET Updated May 25, 2011

On Removing Research 2000 Polls From Our Charts

When Markos ("Kos") Moulitsas published the analysis last week that convinced him that the polls produced by Research 2000 were "likely bunk" and announced plans to sue his former pollster for fraud, he also made an unusual request:

I ask that all poll tracking sites remove any Research 2000 polls commissioned by us from their databases.

Given the still unexplained patterns in the results uncovered by Grebner, Weissman and Weissman, and the even more troubling response late last week by Research 2000 President Del Ali (discussed here), we have chosen to honor Kos' request, as least as it pertains to the active charts on that we continue to update (such as favorable ratings and vote preference questions for upcoming elections). As of this writing, we have removed the Daily Kos/Research 2000 results from the national Obama favorable rating and national right direction/wrong track charts. The rest should be removed from active charts by close of business today.

We have left in place, at least for now, Research 2000 poll results in active charts sponsored by others organizations, although we will also remove those if they so request. We may also revisit this decision as further developments warrant.

Finally, we will leave in place the results from prior elections as, for better or worse, we consider our final estimates (and the results upon which they were based) to be part of the public record. That said, we will likely follow Brendan Nyhan's lead and add a footnote about the controversy to our charts from 2008 and 2009 that include Daily Kos/Research 2000 data.