We study the percentage of welfare losses (PWL) yielded by imperfect competition under product differentiation. When demand is linear, even if prices, outputs, costs and the number of firms can be observed, PWL is arbitrary in both Cournot and Bertrand equilibria. If in addition the elasticity...

This paper provides a theoretical model for the coattail effect, where a popular candidate for one branch of government attracts votes to candidates from the same political party for other branches of government. I assume a political agency framework with moral hazard in order to analyze the...