Condorcet with Dual Dropping Perl scripts release 5.6
http://condorcet-dd.sourceforge.net/
http://sourceforge.net/projects/condorcet-dd/
http://freshmeat.net/projects/condorcet_dd/?topic_id=234
A vote tabulation and ranking system for deciding single or
multi-winner contests (elections) using preference or approval
ballots. Dual Dropping will compute the Schwartz Sequential Dropping
(SSD) and Tideman's Ranked Pair (RP) results for each contest round
and select the combined SSD and RP contest outcome with the lowest
overall dropping cost. It has options to compute just the SSD or RP
outcome, various optional tie-breakers, and alternative measures of
defeat and dropping cost (winning votes and/or margin). See
documentation on SourceForge.
Available in RPM package, tar.gz, or tar.bz2 formats and zip format
for Microsoft Windows (with setup.exe install wizard).
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