Maximum approval top-two
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"Maximum approval top-two" or "MATT" is an approval-based primary where voters use an approval voting ballot to select which candidates would be acceptable to advance to the general election. The maximum approval top-two method then selects no more than two candidates to advance to a general election.
Rules
Maximum approval top-two uses the following steps:
- The candidate who receives the highest approval rating (the "front-runner") qualifies for the general election
- Example: if there are 100 voters, and 40 approve of "A" and "B", 30 approve of only "B", and 30 approve of only "C", then
- "B" advances to the general election, since "B" is approved by 70% of voters.
- Example: if there are 100 voters, and 40 approve of "A" and "B", 30 approve of only "B", and 30 approve of only "C", then
- A second candidate (the "complementary candidate"), who maximizes the approval of the electorate, also qualifies (i.e. by having the highest approval among voters that did not approve of the front-runner). If two candidates both satisfy an equal part of the remaining electorate, the candidate with the highest overall approval rating advances.
- Example: if there are 100 voters, and 40 approve of both "A" and "B", 30 approve of only "B", and 30 approve of only "C", then
- "B" advances with 70% approval (per step 1)
- "C" advances (per this step). "B" satisfies 70% of the electorate, and "C" satisfies the other 30%. So, 100% of the voters will be satisfied with one of their choices in the general election.
- Example: if there are 100 voters, and 40 approve of both "A" and "B", 30 approve of only "B", and 30 approve of only "C", then
For a system that allows for more than two candidates to advance to the general election, use MAF.
(This is a voting system that was dreamed up by User:RobLa, based on these discussions on the election methods mailing list)
History
- 2018-11-20 - first draft published on electowiki.org and as "Replacing the jungle primary" by User:RobLa
Full discussion history of this method and it's counterpart (Majority approval filter) can be found at Talk:Majority approval filter.
See also
- Majority approval filter - a primary election voting method that is guaranteed to advance all candidates receiving a majority approval score to the general election
