Electoral Reform and Social Choice Theory: Piecemeal Engineering and Selective Memory

Author(s):  
Hannu Nurmi
Author(s):  
Iain McLean

This chapter reviews the many appearances, disappearances, and reappearances of axiomatic thought about social choice and elections since the era of ancient Greek democracy. Social choice is linked to the wider public-choice movement because both are theories of agency. Thus, just as the first public-choice theorists include Hobbes, Hume, and Madison, so the first social-choice theorists include Pliny, Llull, and Cusanus. The social-choice theory of agency appears in many strands. The most important of these are binary vs. nonbinary choice; aggregation of judgement vs. aggregation of opinion; and selection of one person vs. selection of many people. The development of social choice required both a public-choice mindset and mathematical skill.


Author(s):  
Martin Peterson

1995 ◽  
Vol 9 (1) ◽  
pp. 91-98 ◽  
Author(s):  
Amartya Sen

This symposium on voting procedures presents many interesting findings and insights. This note scrutinizes them and discusses two general issues. First, the assumption that voters’ preferences are menu-independent (and based on one canonical ordering of the alternatives) underestimates the importance of the process of voting (voting for x, against y). Second, evaluation can be a two-way process, including the axiomatic method (of social choice theory), going from isolated properties to voting schemes, and the converse method of first identifying attractions and perversities of particular voting schemes (as in this symposium) and then using properties for later axiomatic use.


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