So this is my inaugural actual Mancur Olsen-related post (of roving bandit fame).
Is there a collective action problem in parliamentary scrutiny in multi-party systems?
In an American-style 2-party system the oppositions reaps 100% of the political benefits from asking awkward questions of the government, but in a more European multi-party system the gains from scrutiny of government may be spread amongst several opposition parties. Could this reduce the incentive for opposition parties and their members to scrutinise the government?
Just a thought. And a potentially testable one. In fact it might well have been in which case I'd love to know. Abhijeet suggests Indian data would be perfect for a rich cross-state panel.