Feld, Scott L.; Grofman, Bernard - In: Journal of Theoretical Politics 19 (2007) 1, pp. 101-106
The Laakso-Taagepera index (Laakso and Taagepera, 1979) has become the most commonly used measure to specify the ‘effective’number of political parties in a party system where parties vary substantially in their vote and/or seat shares. It is well known that the Laakso-Taagepera...