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Dual Defection Incentives in One System: Party Switching under Taiwan's Single non-transferable Vote

Published online by Cambridge University Press:  28 October 2015

ALEX CHANG  and
YEN-CHEN TANG
ALEX CHANG
Affiliation:
Assistant Research Fellow, Institute of Political Science, Academia Sinica, Taiwanchang626@gate.sinica.edu.tw
YEN-CHEN TANG
Affiliation:
Lecturer, Department of Political Science, National Taiwan Universityd97322002@ntu.edu.tw
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Abstract

Political scientists generally consider that the incentive for legislators to switch parties lies in their desire to be re-elected. While some scholars attribute defection to the legislators’ popularity and strong connections with their constituents which enable them to be re-elected without relying on party labels, others assert that legislators switch if they perceive that staying put might threaten their chances of re-election. In this paper, we find that the two assumptions, to some extent, contradict each other. More surprisingly, the two contradictory hypotheses cohabit under the single non-transferable vote (SNTV) system. From an analysis of the switching in the Taiwanese Legislative Yuan, the empirical evidence shows that because of fierce intraparty competition in the multimember districts, not only barely elected but also top-ranked legislators switched party affiliation in order to avoid the loss in votes or even seats to their copartisans and to maximize their chances of re-election.

Type
Research Article
Information
Japanese Journal of Political Science , Volume 16 , Issue 4 , December 2015 , pp. 489 - 506
Copyright
Copyright © Cambridge University Press 2015 

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