This article studies a model of coalition formation for the joint production (and finance) of public projects, in which agents may belong to multiple coalitions. We show that, if projects are divisible, there always exists a stable (secession-proof) structure, i.e., a structure in which no...

Nous exploitons dans cet article la théeorie des indices de pouvoir pour éevaluer les infuences respectives des deux classes d’électeurs dans le mode de scrutin instauré par la loi électorale du 29 juin 1820, dite loi du \double vote". Nous montrons, à l’aide d’un modèle simplifié,...

L’objet de cet article est d’examiner, à la lumière de deux solutions majeures de la théorie des jeux coopératifs, les coalitions/négociations électorales qui ont lieu dans le cas où le mode de scrutin est un scrutin proportionnel avec listes bloquées, prime au gagnant et comportant...

In this paper, we analyze the equilibrium of a sequential game-theoretical model of lobbying, due to Groseclose and Snyder (1996), describing a legislature that vote over two alternatives, where two opposing lobbies compete by bidding for legislators?votes. In this model, the lobbyist moving...

We analyze and evaluate the di¤erent decision rules describing the Council of Ministers of the EU starting from 1958 up to now. Most of the existing studies use the Banzhaf index (for binary voting) or the Shapley-Shubik index (for distributive politics). We argue in favor of the nucleolus as a...

The main purpose of this paper is to estimate the probability of casting a decisive vote for a class or random electorate models encompassing the celebrated IC and IAC models. The emphasis is on the impact of correlation across votes on the order of magnitude of this event. Our proof techniques...

In this paper, we clarify the relationship between influence/power measurement and utility measurement, the most popular two social objective criteria used when evaluating voting mechanisms. For one particular probabilistic model describing the preferences of the electorate, the so-called...

In this note, we use the technique of option sets to sort out the implications of coalitional strategyproofness in the spatial setting. We also discuss related issues and open problems.

In this paper, we introduce a game-theoretical non-cooperative model of bargaining to analyse project funding in the French river basin com- mittees. After sorting out some of the main theoretical predictions, we proceed with an empirical application to the subsidy policy of French Wa- ter...

The main purpose of this short paper is to examine how traditional Downsian dynamics (convergence of the parties to the median of the distribution) are altered by the introduction of centrifugal incentives arising from the fact that any motion towards the center induces a lost of votes at the...