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Title

How electoral systems affect MPs positions

Authors
Martin, Danielle
Published in Electoral Studies. 2012, vol. 31, p. 192-200
Abstract The question how different electoral systems affect the represention of voters in parliaments has been a thorny issue for a considerable time. While some research suggests that first-past-the-posts systems should lead to a closer correspondence between the preferemces of the electoral district's median voter and of its representative, other work concludes that in proportional representation systems, especially with open lists, candidates have an incentive to cultivate a strong personal vote. To study this question we take advantage of two peculiarities of the Swiss political system, namely that in the same chamber of the parliament some members are elected in PR- and some in plurality elections and that direct democratic instruments play an important role. The second element, given that for a series of votes in parliament voters have had to decide on the same issue, allows us to estimate the policy positions of MPs and the median voter of each electoral district in the same policy space. We find that MPs elected in plurality elections are on average closer to their respective median voter. In PR districts, MPs are much more widely spread around the median voters' preferences.
Keywords Electoral systemsMembers of parliament
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HUG, Simon, MARTIN, Danielle. How electoral systems affect MPs positions. In: Electoral Studies, 2012, vol. 31, p. 192-200. https://archive-ouverte.unige.ch/unige:17273

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Deposited on : 2011-10-31

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