Machine generated contents note: 1.Introduction -- 2.The "State of the Art" in Empirical Democratic Theory -- 3.Comparative Research Designs and Case Selection -- 4.Model Specification and Operationalization -- 5.A Case Study - Belgium -- 6.Testing Major Hypotheses with "Qualitative Comparative Analysis" -- 7.Establishing Similarities and Dissimilarities -- 8.Systematic Matching and Contrasting of Cases -- 9.Reduction of Complexity -- 10.Cross-Sectional Analysis -- 11.Longitudinal Analyses -- 12.Conclusions and Perspectives