Pres. Obama’s 2008 campaign manager, David Plouffe, maintains that liberals will ultimately come back into the fold when it matters in forthcoming elections. He is almost certainly right — and, as far as he goes, it’s not even a gutsy prediction. As Tom Jensen of Dem polling firm Public Policy Polling notes, liberal unhappiness with Obama is not very widespread.

However, approval does not necessarily translate into intenstity, which is the lefty bloggers’ real concern. Generally, the party out of power tends to have more intensity, while the past winners get complacent or apathetic. That the netroots are disgruntled matters primarily to the extent that it reflects on the narrow class of activists and party foot-soldiers needed to run the midterm campaigns.