NAME

Vote::Count::Approval

VERSION 1.00

Definition of Approval

In Approval Voting, voters indicate which Choices they approve of indicating no preference. Approval can be infered from a Ranked Choice Ballot, by treating each ranked Choice as Approved.

Method Approval

Returns a RankCount object for the current Active Set taking an optional argument of an active list as a HashRef.

  my $Approval = $Election->Approval();
  say $Approval->RankTable;

  # to specify the activeset
  my $Approval = $Election->Approval( $activeset );

  # to specify a cutoff on Range Ballots
  my $Approval = $Election->Approval( $activeset, $cutoff );

Cut Off (Range Ballots Only)

When counting Approval on Range Ballots it is appropriate to set a threshold below which a choice is not considered to be supported by the voter, but indicated to represent a preference to even lower or unranked choices.

A good value is half of the maximum possible score, however, the default action must be to treat all choices with a score as approved. With a Range of 0-10 a cutoff of 5 would be recommended, choices scored 4 or lower would not be counted for approval. If cutoff isn't provided it defaults to 0 producing the desired default behaviour.

For Ranked Ballots the cutoff is ignored. If a cutoff is desired for Ranked Ballots a Neutral Preference Option should be included on the Ballot to indicate when subequent choices should not be considered Approved. This is not currently available in Vote::Count.

BUG TRACKER

https://github.com/brainbuz/Vote-Count/issues

AUTHOR

John Karr (BRAINBUZ) brainbuz@cpan.org

CONTRIBUTORS

Copyright 2019 by John Karr (BRAINBUZ) brainbuz@cpan.org.

LICENSE

This module is released under the GNU Public License Version 3. See license file for details. For more information on this license visit http://fsf.org.