Skip to main content Accessibility help
×
Hostname: page-component-7479d7b7d-qs9v7 Total loading time: 0 Render date: 2024-07-10T17:37:31.900Z Has data issue: false hasContentIssue false

4 - Explaining All Voting Paradoxes

Published online by Cambridge University Press:  24 May 2010

Donald G. Saari
Affiliation:
University of California, Irvine
Get access

Summary

To find a medical cure, we first must understand what causes the problem. Similarly, to find good news for voting rules, we first must understand why all of the election inconsistencies occur. Doing so has several advantages; it identifies how to handle the dreaded curse of dimensionality, and it suggests how to discover which voting rules best represent the “will of the voters.” The latter goal, of course, requires establishing a reasonable definition for the elusive “will of the voters.”

To motivate my approach, let me repeat a description (e.g., Saari [74]) about my nonexistent consulting business.

For a price, I will come to your organization before your next election. You tell me who you want to win. After talking with each member of your group, I will design a “fair” election rule (i.e., all candidates will be considered, and it will be acceptable to the voters). The candidate you want to win will win.

To illustrate this boast, let me pose a challenge concerning an election for a new chair. Of the fifteen members in a department, suppose

  • Five prefer Ann ≻ Barb ≻ Connie ≻ Deanna ≻ Elaine ≻ Fred

  • Five prefer Barb ≻ Connie ≻ Deanna ≻ Elaine ≻ Fred ≻ Ann

  • Five prefer Connie ≻ Deanna ≻ Elaine ≻ Fred ≻ Ann ≻ Barb

It is easy to find ways to elect Connie; use the Borda Count or the vote-for-three rule. But how would you elect Fred?

Type
Chapter
Information
Disposing Dictators, Demystifying Voting Paradoxes
Social Choice Analysis
, pp. 123 - 189
Publisher: Cambridge University Press
Print publication year: 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Save book to Kindle

To save this book to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

  • Explaining All Voting Paradoxes
  • Donald G. Saari, University of California, Irvine
  • Book: Disposing Dictators, Demystifying Voting Paradoxes
  • Online publication: 24 May 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511754265.005
Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

  • Explaining All Voting Paradoxes
  • Donald G. Saari, University of California, Irvine
  • Book: Disposing Dictators, Demystifying Voting Paradoxes
  • Online publication: 24 May 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511754265.005
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Explaining All Voting Paradoxes
  • Donald G. Saari, University of California, Irvine
  • Book: Disposing Dictators, Demystifying Voting Paradoxes
  • Online publication: 24 May 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511754265.005
Available formats
×