This paper analyzes the problem of designing mechanisms to implement efficient solutions in economies with externalities. We provide two simple mechanisms implementing the Pigouvian Social Choice Correspondence in environments in which coalitions can be formed. Finally, we study economies in...

We consider the problem of fair allocate an infinitely divisible commodity among agents with single-•peaked preferences and private endowments. First, we show that the adaptation of the uniform rule to this context is the only selection from the no-envy in redistributions and Pareto efficient...

The top-two primary is the new primary system passed in several states of the US that creates a single ballot in which the top two vote getters pass to the general election. Primary elections induce a sequential game with three stages: the candidate-entry stage, the primary election stage, and...

Parliamentary elections to the Basque Autonomous Community have a stable multi-party system that regularly produces long-lived minority and coalition governments. More amazing still, this stable party system arises in the context of a complex social and political setting in which the society...

We present a framework to analyze the relative importance of issues for the electorate. We distinguish two concepts -- issue salience and issue divisiveness -- and present those in the context of the multidimensional spatial model. Issue salience, which is widely studied in empirical and...

The top-two primary recently approved in states like Washington, California, and Alaska eliminates the closed party primaries and creates instead a single ballot in which the first and second place winners pass to the general election. We compare the electoral consequences of the top-two primary...