While there has been some noticeable criticism of Obama from the left, with some even resorting to ridiculous hyperbole claiming Obama is no different from George Bush, Public Policy Polling puts this in perspective:
Our new poll suggests that liberal unhappiness with Barack Obama is still largely anecdotal and not very widespread. His approval rating with liberal Democrats is 95%, with only 3% disapproving of him.
On health care 88% of voters in that group say they’re with Obama and only 7% are opposed. We simply are not seeing any broad evidence of push back toward him from the left for not advocating for single payer.
There is a little more unrest with him on Afghanistan. 68% of liberal Democrats support his approach there with 22% opposed. Even with those who disagree with him on the issue 81% express approval of his overall job performance so it doesn’t seem to be a deal breaker by any means.
Despite the occasional attacks on Obama from the liberal blogosphere, it looks like most liberals are capable of differentiating disagreements on specific issues with overall approval. Besides, most of us never expected to agree with Obama on everything, and realized that the chances that someone who wanted to get out of Afghanistan immediately becoming president, regardless of the merits, was pretty close to zero.