Thinking of Italy brings me naturally to thinking about the difficulty of making democracy work for the citizens. The inability of western governments to defend the basic economic interests of large segments of the population has become clear enough over the past 5 (or 20-30 if you were paying attention) years. Of course, no political scientist would make the ridiculous claims on behalf of democracy that some economists make on behalf of free markets. But still. What exactly do we except democracy to deliver?
The clearest statement on political market efficiency I can think of is Donald Wittman's The Myth of Democratic Failure. The interesting bit about Wittman is that he makes two ambitious (to my view implausible) claims: that the rational actor model explains politics well, and that an effective and 'efficient' democracy can be explained in rational actor terms. The resulting text is an entertaining lesson in the usefulness of functionalist reasoning and ad hocery wheeled out in support of a notionally deductive theory resting on individual rational action.
But political science also makes less strong claims about democratic efficiency as a matter of course. The notion that governments could fleece the population systematically is rarely entertained. Yet at the moment this is what seems to be happening across the advanced world, with little in the way of organized reaction (as yet).
Which is the key - 'organized reaction'. Democracy requires organization - leaving political action to isolated individuals doesn't get us very far. And the difficulties of organization - the free rider dilemma, the danger of hierarchy, the asymmetric access to political influence - produce colossal inefficiencies in the political market. Political scientists need to start thinking about how these inefficiencies, coupled with economic disaster, could destabilize what we assume to be well entrenched democratic institutions.