Contractualism and radical pluralism

How should contractualists seek to accommodate and respond to the existence of radical pluralism within contemporary liberal states? Ryan Muldoon has recently argued that a) the dominant Kantian liberal model of contractualism is hopelessly ill equipped to do so but that b) there is a particular kind of Hobbesian contractualism that can do much better. I raise some problems concerning the capacity of Muldoonian contractualism to respond appropriately to the problem of radical pluralism. I then propose a very different kind of solution that involves embracing an advice model of contractualism.