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The unfortunate natural experiment in ballot design : the Scottish Parliamentary elections of 2007

Carman, C.J. and Mitchell, J. and Johns, R.A. (2008) The unfortunate natural experiment in ballot design : the Scottish Parliamentary elections of 2007. Electoral Studies, 27 (3). pp. 442-459. ISSN 0261-3794

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Abstract

The 2007 Scottish Parliamentary elections were notable for the extensive variation across constituencies in rejected ballots (ranging from 1.90% to 12.09%). This paper uses an unfortunate natural experiment to identify the influence of ballot design on the occurrence of rejected ballots, or 'residual votes'. In two electoral regions, visual prompts were removed and instructions were abbreviated on the (already poorly designed) ballot papers. Using zero-truncated negative binomial regression to model total residual votes as well as constituency and regional undervotes and overvotes, we find clear evidence that these changes made a major contribution to the extent of residual votes in constituencies within those regions. The findings emphasise that ballot design is not a trivial subject that can be neglected by electoral administrators.

Item type: Article
ID code: 17893
Keywords: ballot design, rejected ballots, residual votes, Scottish elections, Political science (General), Political Science and International Relations
Subjects: Political Science > Political science (General)
Department: Faculty of Humanities and Social Sciences (HaSS) > School of Government and Public Policy > Politics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 06 May 2010 09:35
    Last modified: 05 Sep 2014 02:35
    URI: http://strathprints.strath.ac.uk/id/eprint/17893

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