This paper develops a dynamic model of legislative policy making with evolving, privately observed policy preferences. Our goal is to find conditions under which decision rules, which assign feasible policies based on the legislators' preferences, are sustainable in the long run. We show that...

When collective choices are made in more than one round and with different groups of decision-makers, so-called election inversions may take place, where each group have different majority outcomes. We identify two versions of such compound majority paradoxes specifically, but not exclusively,...

Members of an assembly that chooses policies on a series of multidimensional ideological issues have incentives to coalesce and coordinate their votes, forming political parties. If an agent has an advantage to organize a party at a lower cost, a unique party forms and the policy outcome moves...

We analyze voter preferences for eight General Elections for the Danish parliament by using survey data to investigate the possible presence of five types of social choice paradoxes that may occur in list systems of proportional representation. Two serious paradoxes fail to manifest themselves,...

This paper is devoted to the analysis of all constitutions equipped with electoral systems involving two step procedures. First, one candidate is elected in every jurisdiction by the electors in that jurisdiction, according to some aggregation procedure. Second, another aggregation procedure...

We compare Ranked-Choice Voting (RCV) and Plurality Voting (PV) in elections with 3 candidates. Voters receive consequential benefits from the election of a candidate close to their preferred policy position and also benefit from expressing their preferences sincerely. We provide conditions...

Early results on the emptiness of the core and the majority-rule-chaos results led to the recognition of the importance of modeling institutional details in political processes. A sample of the literature on game-theoretic models of political phenomena that ensued is presented. In the case of...

Pivato and Soh [Pivato, M., Soh, A., 2020. Weighted representative democracy. Journal of Mathematical Economics 88 (2020) 52--63] proposed a new system of democratic representation whereby any individual can choose any legislator as her representative and different legislators can represent...

Interest groups are introduced in a spatial model of electoral competition between two political parties. We show that the presence of these interest groups increases the winning set, which is the set of policy platforms for the challenger that will defeat the incumbent. Therefore interest...

Interest groups are introduced in a spatial model of electoral competition between two political parties. We show that, by coordinating voting behavior,these interest groups increase the winning set, which is defined as the set of policy platforms for the challenger that will defeat the...