We analyze the effects of voter coordination on the equilibrium of voting games. Specifically, we analyze the concepts of strong equilibrium and coalition - proof equilibrium for plurality rule and runoff rule elections. We characterize these equilibria in the three candidate case, and provide...

We develop and calibrate a comprehensive model of the world and the calibrators calibrating it. The model is general in the sense that it takes into account not only the relevant, but also the irrelevant features of the economic environment. One of the byproducts of the analysis is the World...

We consider a dynamic oligopoly model in which a seller may drop out of the market when demand for its product is insufficient in the first period. Buyers suffer some disutility if a seller exits the market and so their first period purchase decision does not only depend on current period...

We analyze a model in which agents have to make a binary choice under incomplete information about the state of the world, but also care about coordination with other agents who have the same problem. In some of these situations, the larger the share choosing the same alternative, the better off...

This paper analyzes a model in which two groups compete with each other for a prize in every time period. We assume that there is a status quo bias: Yesterday's winner is in a stronger position than the other group, if there is a fight today. Hence, a change of the status quo has long term...

Candidates for U.S. presidential elections are determined through sequential elections in single states, the primaries. We develop a model in which candidates can influence their winning probability in electoral districts by spending money on campaigning. The equilibrium replicates several...

Civilian targets of terrorist or criminal attacks (e.g., sport stadiums, chemical or nuclear industry; infrastructure such as ports or pipelines) are often owned by the private agents who choose how to guard against potential attacks. This creates an important externality problem, as some of the...

In real-life elections, vote-counting is often imperfect. We analyze the consequences of such imperfections in plurality and runoff rule voting games. We call a strategy profile a robust equilibrium if it is an equilibrium if the probability of a miscount is positive but small.All robust...

This paper develops a theory of political behavior in which moral values are a luxury good: the relative weight that voters place on moral rather than material considerations increases in income. This idea both generates new testable implications and ties together a broad set of empirical...

We analyze a model in which voters learn over time their preferences regarding an irreversible social decision. Voters can either implement the project in the first period, or they can postpone the decision to the second period. We analyze the effects of different majority rules. We show that...