Next Left's Sunder Katwala challenges the conventional wisdom that the Iraq inquiry has backfired on Gordon Brown.
2. Voodoo corner 
UK Polling Report's Anthony Wells warns of the rise of "voodoo polls" -- open-access polls that do not make any attempt to gather a representative sample. Today's Mumsnet poll on voting intentions is a typical offender, he says.
The Times's Sam Coates says it's worth keeping an eye on a list revealing the identities of the lobbyists for whom MPs have hired rooms.
Mark Pack at Liberal Democrat Voice discusses the "real impact" of social networking sites on politics.
The New York Times's Room for Debate blog has a rolling discussion of the health-care overhaul -- where will it go from here, if anywhere? Harold Pollack, Steffie Woolhandler and David Himmelstein have contributed so far.