The book results from two studies on the role of MPs and the National Assembly of the Republic of Serbia in the legislative process, seeking to find out to what extent and in what way various social interests influence the adoption of laws in Serbia today. By combining qualitative and quantitative methods of data collection and analysis, the author outline the patterns and processes through which legislative proposals are formulated, and identify forms of voting behavior of MPs and their departure from the voting options of their parties and parliamentary clubs. A partial analysis of media content is undertaken in order to get a clearer picture of how social interests are articulated during the preparation of laws.