Their roles in the blogosphere.
The Left seems to want to be where conservatives have been for most of the last 50 years: shooting from the outside in; questioning fundamental arrangements and assumptions about the role of government; griping about media coverage; standing athwart history, yelling stop. Meanwhile, conservatives have had enough of that. We’re slowly, inexorably, moving in on, or replacing, the ossified institutions of the old regime. It will be a long, long struggle and I still think liberals have the commanding heights. But the good news is that for the first time in our lifetimes, the liberals look like they want to switch places.