With Approval Voting, the voter is asked to indicate which of the many candidates the voter supports.
In contrast, Balanced Approval Voting allows the voter the additional option of registering opposition or to any of the candidates, effectively balancing out (for that candidate) support by another voter. For either of these two systems, it is important to remember that the voter also has the option, for each candidate, of registering neither support nor opposition.
Both Approval Voting and Balanced Approval Voting are evaluative voting methods.
Ration Voting:
With Ration Voting, each voter has a ration of votes to distribute among the candidates. A given candidate can receive any portion of that ration leaving the voter free to distribute the remaining votes among the other candidates.
With Balanced Ration Voting, the voter has the added option, with each candidate, to specify support or opposition to the candidate.
Because there is a fixed ration, the voter must make a choice of which candidates to include so, strictly speaking, these are not evaluative voting systems. However, the motivation for this system is to make voting manageable when there are a very large number of candidates. The intent is to make the ration quite large, taking into account that voters typically only establish opinions about a limited number of candidates.
Each of these systems, balanced or not, is not evaluative.
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