[1]Ali ?arkoglu, “The Turkish Party System in Transition: Party Performance and Agenda Change,” Political Studies, Vol. 46 1998, pp. 544-71. [2]Metin Heper, “Islam and Democracy in Turkey: Toward a Reconciliation?” Middle East Journal, Vol. 51 1997, pp. 32-45. [3]Henry R. Kerr, “The Swiss Party System: Steadfast and Changing,” in Hans Daalder, ed., Party Systems in Denmark, Austria, Switzerland, the Netherlands and Belgium, London: Frances Pinter 1987, pp. 107-92. [4]David Hanley, “France: Living with Instability,” in David Broughton and Mark Donovan, eds., Changing Party Systems in Western Europe, London: Pinter 1999, pp. 48-70. [5]Ray Taras, “Politics in Poland,” in Gabriel A. Almond, Russell J. Dalton and G. Bingham Powell Jr., European Politics Today, New York: Longman 1999, pp. 364-420. [6]See Giovanni Sartori, Parties and Party Systems: A Framework for Analysis, Cambridge: Cambridge University Press 1976, Vol. 1. [7]See Alan Siaroff, Comparative European Party Systems: An Analysis of Parliamentary Elections Since 1945, New York & London:Garland Publishing, Inc. 2000. [8]夏涛、夏庆宇.政治周期运动现象的形成机理分析[J].国外社会科学,2017(3).