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Invalid Ballots and Electoral Competition

Gani Aldashev and Giovanni Mastrobuoni ()

No 153, Carlo Alberto Notebooks from Collegio Carlo Alberto

Abstract: We study how the closeness of electoral race affect the number of invalid ballots under the traditional paper-ballot voting technology. Using a large dataset from the Italian parliamentary elections in 1994-2001, we find a strong positive correlation between the closeness of electoral race and the fraction of invalid ballots. This correlation is not driven by voters' behavior, the biased actions of election officers, or the strategic pressure by parties. The theory that garners most support is that of unbiased election officers that increase their effort in response to higher (expected) closeness of electoral race, so as to reduce the likelihood of incorrectly adjudicating the victory. We also find large North-South differences in the patterns of invalid ballots: (i) electoral districts and municipalities in Southern Italian regions have a substantially higher level of invalid ballots, and (ii) the correlation between the closeness of electoral race and the fraction of invalid ballots is absent in the South. Social capital and organized crime explain these differences: once these two features are accounted for, the districts and municipalities in the South behave similarly to those in the North.

Keywords: invalid ballots; electoral competition; social capital; voting technology; Italian parliamentary elections (search for similar items in EconPapers)
JEL-codes: D72 D73 D81 Z10 (search for similar items in EconPapers)
Pages: 40 pages
Date: 2010
New Economics Papers: this item is included in nep-cdm and nep-pol
References: Add references at CitEc
Citations: View citations in EconPapers (5)

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Related works:
Journal Article: Invalid Ballots and Electoral Competition (2019) Downloads
Working Paper: Invalid Ballots and Electoral Competition (2015) Downloads
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