Most positive theories are variants of the basic principal-agent game.
However, for studying representation, these models fail to address a number of important issues. Foremost among these are situations in which the principal is not a single actor, but a collective such as a constituency or group. Since representation is such a fundamental part of democratic institutions and political life, it is important that proper agency models of political relationships be developed. This paper outlines some of the fundamental differences between political and economic agency. The model presented here is preliminary and should be viewed as work in progress.