[EM] OpenSTV 2.1.0 released and new OpaVote features

Richard Fobes ElectionMethods at VoteFair.org
Mon Sep 17 11:08:04 PDT 2012

On 9/15/2012 3:02 AM, Kristofer Munsterhjelm wrote:
> On 09/15/2012 09:55 AM, Juho Laatu wrote:
>> On 15.9.2012, at 6.05, Jeffrey O'Neill wrote:
>>> You can also now save Condorcet results in HTML format but still
>>> working on the best graphics to visualize Condorcet results.
>> One solution is to support minmax(margins). With that method you can
>> simply draw a histogram that indicates how many new (first preference)
>> votes each candidate would need to win (or tie) with the winner /
>> current leader.

Here is the URL to a results page at VoteFair.org that shows another way 
to graphically display pairwise-comparison results:


Note that the pairwise comparisons are sorted according to popularity.

The length of each bar indicates how many voters support that choice 
compared to the other choice in the pair.

The "summary" section uses bar lengths that basically sum up the 
pairwise counts.  This means that the length of a bar for a 
higher-ranked choice is not necessarily always longer than the length of 
a bar for the next-lower-ranked choice (but such cases become rare as 
the number of votes increases).

Richard Fobes

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