Moderates now find themselves betwixt and between. On the left, there is a president who appears to be, as Crook says, “a conviction politician, a bold progressive liberal.” On the right, there are the Rush Limbaugh brigades. The only thing more scary than Obama’s experiment is the thought that it might fail and the political power will swing over to a Republican Party that is currently unfit to wield it.

Those of us in the moderate tradition  the Hamiltonian tradition that believes in limited but energetic government  thus find ourselves facing a void. We moderates are going to have to assert ourselves. We’re going to have to take a centrist tendency that has been politically feckless and intellectually vapid and turn it into an influential force.

The first task will be to block the excesses of unchecked liberalism. In the past weeks, Democrats have legislated provisions to dilute welfare reform, restrict the inflow of skilled immigrants and gut a voucher program designed for poor students. It will be up to moderates to raise the alarms against these ideological outrages.

But beyond that, moderates will have to sketch out an alternative vision. This is a vision of a nation in which we’re all in it together  in which burdens are shared broadly, rather than simply inflicted upon a small minority. This is a vision of a nation that does not try to build prosperity on a foundation of debt. This is a vision that puts competitiveness and growth first, not redistribution first.

Moderates are going to have to try to tamp down the polarizing warfare that is sure to flow from Obama’s über-partisan budget. They will have to face fiscal realities honestly and not base revenue projections on rosy scenarios of a shallow recession and robust growth next year.

They will have to take the economic crisis seriously and not use it as a cue to focus on every other problem under the sun. They’re going to have to offer an agenda that inspires confidence by its steadiness rather than shaking confidence with its hyperactivity.

If they can do that, maybe they can lure this White House back to its best self  and someday offer respite from the endless war of the extremes.