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3-2-1 voting: Difference between revisions
→Footnote ²: rules for the third semifinalist
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There are two extra qualifications when choosing the third (weakest) semifinalist. First, they must not be of the same party as both of the other two; if they are, skip to the next-highest "good" ratings. This prevents one party from winning simply by controlling all three semifinalist slots (the "clone candidate" problem). Second, they must have at least half as many "good" ratings as the first (strongest) semifinalist. If they don't, then skip step 2 entirely and make both semifinalists directly into finalists. This prevents a relatively unknown "also-ran" from winning an election with two dominant, highly-polarized candidates (the "dark horse" problem). A third candidate can win, but only by getting appreciable support.
(Note: both of these rules deal with problems that are likely to be relatively rare, and that even if they occur, would often but not always be minor. Thus, though they are definitely recommended in cases where 3-2-1 voting is used on an ongoing basis, they are optional for one-off elections. Also, it might be possible to prevent these problems with other versions of these rules. For instance, the clone candidate problem could be avoided by using a proportional approval system on the "good" votes to pick the top 3, and the dark horse problem could be avoided by a hard minimum threshold such as 15% on "good" votes. The
== Tiebreaker ==
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