Theoretical Expectations and Actual Outcomes of Electoral Systems : How to Measure the Size of the Deviation?

Warning

This publication doesn't include Faculty of Economics and Administration. It includes Faculty of Social Studies. Official publication website can be found on muni.cz.

Authors	NEMČOK Miroslav ŠEDO Jakub
Year of publication	2018
Type	Article in Periodical
Magazine / Source	World Political Science
MU Faculty or unit	Faculty of Social Studies
Citation
Web	článek
Doi	http://dx.doi.org/10.1515/wps-2018-0008
Keywords	electoral systems; measurement tool; Seat Product Model; size of deviation; theoretical expectations
Attached files	Nemcok_Sedo_-_Theoretical_Expectations_and_Actual_Outcomes_of_Electoral_Systems_How_to_Measure_the_Size.pdf
Description	The article criticises current conceptual frameworks focused on the evaluation of the performance of electoral systems. It offers a new tool allowing researchers to measure the size of the deviation of electoral outcomes from theoretical expectations. The index d=log[N_s/(MS)^1/6] is built on the Seat Product (Taagepera, Rein (2007b) Predicting Party Sizes: The Logic of Simple Electoral Systems. New York: Oxford University Press) and captures the deviations of electoral outcomes from predictions solely on the basis of two institutional factors – average district magnitude (M) and size of assembly (S). The theoretical background of index d is explained, and its reliability is further supported by conventional econometric methods based on empirical data.
Related projects:	Aktuální problémy politologického výzkumu IV.