We analyze the economic aspects of corruption in public procurement. We describe the conditions necessary to corruption and develop five intermediary objectives in the task of fighting against corruption. We propose a mechanism that pursues such objectives.

We study a model of proportional representation, in which the policy space is multidimensional. We first show, via an example, that the assumption of quasi-concavity of the utility function is not sufficient to obtain the result that only the extreme parties get votes, contrary to the...