A theoretical approach to the measurement of structural disproportionality in electoral systems

Stream: Panel 91 - Comparative Politics: Representation, Party Systems and Electoral Systems 
Date: Wednesday, 28 September 2016
Time: 1.30 pm – 3.00 pm


Abstract: proportionality of the electoral systems has been used as a core variable of interest in several socio-political research. However, lack of proper conceptualization and measurement techniques questions the quality of the quantitative data on proportionality wherever they are used to establish causal relations. First, this paper criticizes the existing empirical approaches to the measurement of proportionality on the ground of their failure to exogenize the effect of behavioural adaptations by the voters in response to the predictable disproportionality of the electoral system. Second, an alternative methodological framework is proposed for the measurement of proportionality based on computer simulation. Finally, a new index of proportionality is composed on the basis of the proposed methodology that unlike previous indices benefits from decomposability. This index is measures for several countries/election years.


Araz Aminnaseri (Presenter), University of Melbourne
PhD candidate, the University of Melbourne