This paper concerns representational practices in demands driven development of public sector, and the problems they involve. The term demands driven development refers to a movement in public sector towards a closer cooperation with the citizens, primarily with regards to the development of public e-services. The objective with the paper is to explore representational practices through the analysis of practitioners' talk about demands driven development. There are several interrelated problems with representational practices, in this paper analysed through the discussions of practitioners who work with demands driven development of public sector. The conclusion is that these practitioners work with representational practices in a way which they at the same time seem to consider rather problematic.