In multi-party systems, parties often form alliances before elections. What brings competing parties to coalesce into new entities? I present a model of electoral competition in which parties can form pre-electoral alliances and decide how binding these should be. Parties face a dynamic...

Investigating the strategic advantage of negatively interdependent preferences in action monotonic games, we derive characterizing conditions both for general action monotonic games and for the subclass of action monotonic games with spillovers. Examples demonstrate the generality of our...

The theory of economic voting has extensively explored the influence of national economic conditions on votes for the incumbent party during elections. Such literature has never, however, explored the potential effects of economy on other types of voting swings in the sense of change in votes...

The theory of economic voting has extensively explored the influence of national economic conditions on votes for the incumbent party during elections. Such literature has never, however, explored the potential effects of economy on other types of voting swings in the sense of change in votes...

We show that concealing cost information is a dominant strategy in heterogeneous Bertrand oligopolies. This result enables us to endogenize the number of firms in a market in terms of market size, entry costs, and unit cost uncertainty.

This paper models the dynamic process through which a large society may succeed in building up its "social capital" by establishing a stable and dense pattern of interaction among its members. In the model, agents interact according to a collection of infinitely repeated Prisoner's Dilemmas...

We present a non-technical account of ambiguity in strategic games and show how it may be applied to economics and social sciences. Optimistic and pessimistic responses to ambiguity are formally modelled. We show that pessimism has the effect of increasing (decreasing) equilibrium prices under...

A well-known result by Vega-Redondo implies that in symmetric Cournot oligopoly, imitation leads to the Walrasian outcome where price equals marginal cost. In this paper we show that this result is not robust to the slightest asymmetry in fixed costs. Instead of obtaining the Walrasian outcome...

Vega-Redondo (1997) showed that imitation leads to the Walrasian outcome in Cournot Oligopoly. We generalize his result to aggregative quasi-submodular games. Examples are the Cournot Oligopoly, Bertrand games with differentiated complementary products, Common- Pool Resource games, Rent-Seeking...

We show that if limit orders are required to vary smoothly, then strategic (Nash) equilibria of the double auction mechanism yield competitive (Walras) allocations. It is not necessary to have competitors on any side of any market: smooth trading is a substitute for price wars. In particular,...