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...

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...

When candidates in primary elections are ideologically differentiated (e.g., conservatives and moderates in the Republican party), then candidates with similar positions affect each others' vote shares more strongly than candidates with different ideological positions. We measure this effect in...

What is the role of legal limits on executive power, if any, when citizens demand more security from terrorism and allowing executive officials legal flexibility of action appears necessary to achieve it? We develop a game-theoretic model to show that when the executive faces increased electoral...

We analyze a theoretical model in which entrepreneurs’ property rights are threatened by “raiders” who can challenge them to a contest for control of their firms. Entrepreneurs have heterogeneous productivity, and decide how much capital to invest before raiders decide whom to attack. In...

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...