The incidence of taxation and the design of an optimal tax system have been extensively discussed in the public finance literature but mainly within a competitive market setting or within a homogenous good (Cournot type) oligopoly. In a differentiated product oligopoly, the effect of taxation...

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As norms and tastes adapt to the social conditions shaped by policy variables, voters' opinions about these policies may evolve as well. We show how this process can lead to political instability. Moreover, if a politician's platform is shaped opportunistically so as to gain the majority's...