Credence attributes of products are unobservable through search or experience. Some consumers are willing to pay a premium for their provision, and in addition, citizens can apply social pressure on firms to supply credence attributes. Firms have formed voluntary organizations to assure the...

This paper presents a theory of common agency lobbying in which policy-interested lobbies can first influence the choice of a governing coalition and then influence the legislative bargaining over policies. Equilibria can involve active lobbying at both stages of the governing process....