Re: [belenios-discuss] Cumulative voting mode

[Véronique Cortier <veronique.cortier AT loria.fr>]

Dear Alban,

Thank you for your suggestion!

For multiple votes, we can see another way to emulate it in the default
mode, assuming each candidate can be assigned some maximum number of
votes (e.g. 3 in your proposed voting interface).

Assume you have 6 candidates : A, B, C, D, E, F

Then you create 3 copies of each candidate (if each candidate can
receive at most 3 votes):
A1, A2, A3, B1, B2, B3, C1, C2, C3, D1, D2, D3, E1, E2, E3, F1, F2, F3

Voters can then freely select 5 "candidates" in the list if they have 5
votes.

After the tally, you simply need to (manually) sum up the votes for A1,
A2, A3 to get the votes for candidate A, and similarly for the other
candidates.

Note that this solution leaks some information. For example, if voters
tend to vote for A3 only if they voted also for A2 and A1, then you know
how much triple votes were granted to A. But your two solutions had
similar (and probably acceptable) issues.

Of course, this is not  perfect solution so we'll keep in mind what
would need to be develop from a cryptographic point of view to fully
support your mode, in case some voting interface is developed.

Best,
Veronique.


Le 16/09/2021 à 09:52, Alban Bruder a écrit :
> Hey all,
> 
> in our organization we sometimes do cumulative voting (multi voting). It
> is a voting mode where every voter has multiple votes and can distribute
> them throughout the candidates (multiple votes per candidate are possible).
> 
> We currently either do this with multiple questions in the default mode
> (first vote, second vote, etc). After the election we then calculate the
> final result. Another option is to use the old interface with
> alternative voting mode and voters input the number of votes per
> candidate in the text fields. This is not very user friendly and the
> result need to be processed after the election either way.
> 
> This is why I would like to offer help adding this kind of voting mode.
> Anyone else interested in this feature?
> 
> I created a quick draft of how the voting interface could look like:
> 
> 
> 
> Information on Cumulative voting:
> https://en.wikipedia.org/wiki/Cumulative_voting
> 
> Kind Regards,
> Alban Bruder
> 
> -- 
> Alban Bruder
> 
> Studiengang Medieninformatik, B.Sc.
> 
> Bauhaus-Universität Weimar
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