HANS-JOACHIM VEEN is research director of the Konrad Adenauer Foundation in St. Augustin, Germany, and a member of the foundation's executive board. He was director of the Foundation's Research Institute from 1983 to 1992 and deputy director from 1978 to 1982. Currently he lectures in political science at Mainz University. Dr.Veen received his Ph.D. from Freiburg University and has published and lectured extensively on the West German party system and voting behavior.NORBERT LEPSZY is a political scientist with the Research Institute of the Konrad Adenauer Foundation. He earned his Ph.D. at Bonn Univesity and has published and lectured on the German party system and on comparative politics. Dr. Lepszy currently lectures in political science at Munster University.PETER MNICH is research assistant at the University of Luneburg and a former staff member of the Research Institute of the Konrad Adenauer Foundation His interests include the area of empirical research, especially the analysis of cohort phenomena. Mr. Mnich received his M.A. in sociology from Kiel University.