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Product Voting (PRO-V) is a [[Single Member system|Single-Winner]] [[Cardinal voting systems]] developed by [[User:Aldo Tragni|Aldo Tragni]].
The objectives of this voting system is the balance between simplicity, resistance to strategies, elect utilitarian winner and provide the voter with a good representation of interests (range with 5 ratings).
===Name derivation===
PRO-nV: the PRO-V procedure works with ranges of different sizes and n indicates the amount of ratings used in the range.▼
==Procedure==
Ballots: voter score each candidates with bonus in [x1,x2,x3,x4,x5] and the absence of evaluation is equivalent to x1. Candidates at the beginning all have 1 point.
===
The
<math>\begin{equation}
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n = total number of votes.
If you have '''paper ballots''' then, before counting, you can eliminate ratings
Eg given these 3 votes:
A[
A['''
A[
delete the ratings
B[
B[
A[
so there is less multiplication to do.
===
The minimum value of the range is always x1.
▲PRO-nV: the PRO-V procedure works with ranges of different sizes and n indicates the amount of ratings used in the range.
In a context with very different options (such as the electoral context) it's better to use an exponential scale of this type:
▲*PRO-2V: uses ratings in [1,2].
[x1, x2, x4, x8, x16]
▲*PRO-V: is the default definition, with ratings in [1,5].
while in contexts with options not very far from each other (such as satisfaction surveys) it's better to use a linear scale of this type:
▲*FAIR-9V: uses ratings in [1,9].
[x1, x2, x3, x4, x5]
Adapting the scale to the context allows the voter to represent their interests well, maintaining simplicity in the vote (which always has only 5 ratings) and also more resistance to strategies.
==Voting systems comparison==
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