Laws Against Party Switching, Defecting, or Floor-Crossing in National Parliaments Kenneth Janda Northwestern University
[email protected] The Legal Regulation of Political Parties Working Paper 2 August 2009 © The author(s), 2009 This working paper series is supported by the Economic and Social Research Council (ESRC research grant RES- 061-25-0080) and the European Research Council (ERC starting grant 205660). This paper was prepared for delivery at the 2009 World Congress of the International Political Science Association held in Santiago, Chile July 12-16, 2009. Special Section 01.280 “Party Democracy and Party Law: The Legal Regulation of Political Parties in Modern Democracies” Work in progress . Please check with the author before citing or quoting. To link to this paper : http://www.partylaw.leidenuniv.nl/uploads/wp0209.pdf This paper may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, re-distribution, re-selling, loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. ISSN: 2211-1034 The Legal Regulation of Political Parties, working paper 02/09 Laws Against Party Switching, Defecting, or Floor Crossing in National Parliaments Kenneth Janda Abstract Many western scholars may be surprised to learn that parliamentary members who switch parties during the session may be expelled from parliament because they violate the law in their country. This paper studies such “anti-defection” laws. It investigates the extent of such legislation; why and how often legislators switch parties; how this phenomenon has been studied; why some scholars favor banning party switching; why politicians have legislated against party defections; and the consequences of such bans for political parties and party systems.