Are blogger attacks on the Republicans counterproductive at this point, at least from a "left" point of view? Is not the relevant signal telling Obama he can safely move to the center without losing much support? The blogger voices are in essence signaling that a broader public must stand behind these attacks, or that a broader public is being convinced by these attacks, and therefore that Obama need not fear defections and he can continue to ignore campaign promises.
An alternative scenario is that the attacks turn some of the still-undecideds against the Republicans and bring them into the Democratic camp. Is that a relevant margin?
At this point, how many people say the following: "You know what honey, I was just reading those blogs this morning. I used to like Sarah Palin but this time she has really gone over the edge. I don't know about her any more. Maybe we should think about voting Democratic."
How about: "Honey, they've called off the death panels. We can support the mandates now."?
The funny thing is, a lot of people do think like that, I'm just not sure they are the ones reading blogs.
The general point is that if you are not a pivotal voter, announcing your true preferences and views does not necessarily help you get what you want.
Those who blog about primary challenges to Democrats from the left, or the need to deliver concrete results before the next election, may be serving up better rhetorical strategies. But of course that is also less fun.