We introduce tax contracts and examine how they affect government formation and welfare of voters in a democracy with proportional elections. A tax contract specifies a range of tax rates a party is committed to if in government. We develop a new model of party competition in which parties...

Democratic processes may not take the welfare of future generations sufficiently into account and thus may not achieve sustainability. We show that the dual democratic mechanism – rejection/support rewards (RSRs) for politicians and elections – can achieve sustainability. RSRs stipulate that...

This paper investigates the role of campaign advertising and the opportunity of legal restrictions on it. An electoral race is modeled as a signalling game with three classes of players: a continuum of voters, two candidates, and one interest group. The group has non-verifiable insider...

I develop a model of group decision-making, in which a committee generates proposals and holds open discussions, but the ultimate decision is either taken by a leader (decision by authority) or by majority vote. Optimal communication processes are studied that combine both cheap talk statements...

We study political activism by several agents (lobbyists, unions, etc.) who have private but imperfect policy-relevant signals, and seek to influence the decisions of a policy maker. When agents can share information and coordinate their actions, the equilibrium is shown to be equivalent to that...

We study the effects of unequal representation in the interest-group system on the degree of information transmission between a lobbyist and a policy-maker. Employing a dynamic cheap-talk model in which the lobbyist cares instrumentally about his reputation for truth telling, we show that the...

The paper presents a positive model of communication in federal legislatures to study the incentives of members to engage in a meaningful exchange of information, and how this shapes policy outcomes. Depending on the type of policy under consideration, communication between delegates generally...