LOBBYING AND THE STRUCTURE OF PROTECTION by 0. CADOT* J. DE MELO** and M. OLARREAGAt 97/74/EPS * Associate Professor of Economics at INSEAD, Boulevard de Constance, 77305 Fontainebleau Cedex, France. ** Professor of Political Economy at University of Geneva, 102 bd Carl Vogt, 1211 Geneva 4, Switzerland and CEPR. t Researcher at the World Trade Organization, Economic Research, 1211 Geneva, Switzerland. A working paper in the INSEAD Working Paper Series is intended as a means whereby a faculty researcher's thoughts and fmdings may be communicated to interested readers. The paper should be considered preliminary in nature and may require revision. Printed at INSEAD, Fontainebleau, France.