Recent research on the usage of electronic markets in digital government has mostly focused on the government's executive branch. This paper discusses several conceptual concerns that obstruct the broader application of electronic market mechanisms to the legislative branch of the government instead. A systematic examination of these concerns shows that most of them are tractable, although further research is necessary to handle some of the complexities involved. We also show how electronic markets can be used not only to improve public decision-making within the parameters of existing political tradition but also to facilitate progressive changes in the organization of democratic governments.