Majority score voting: Difference between revisions

imported>Homunq
imported>Homunq
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Note that A, the bigger of the two subfactions, must necessarily be above the 50-point threshold in step 2, so Z will be safely eliminated. In many cases, B, the smaller subfaction, will fall short of 50 points. This helps explain the rationale for putting that threshold at 50 points.
 
This is not to say that majority score solves the chicken dilemma 100%. ItIf subfaction B (the smaller one) is stilllarger possiblethan for25% of the smallertotal, subfactionit Bis still possible for them to win if they largely reject the A while the A voters largely accept B. And if both factions largely reject each other, Z can win. But the key word there is "largely"; unlike the case with [[approval voting]] or [[score voting]], this strategy will not work if it's done by only a few individual voters, but only if one subfaction uses it significantly more often than the other. Also, the smaller subfaction must be larger than 25%, which is rare. Given that organizing such a coordinated betrayal in secret would be hard, and; that doing so openly would invite mutually-destructive retaliation; and that even if it could be done secretly and unilaterally, it would risk electing Z if the betraying subfaction did not reach 25%; it seems that majority score voting has a good chance of avoiding this problem.
 
As a final tricky scenario, consider what happens in the above case if the minority Z prefers the smaller subfaction B. That results in a [[center squeeze]] scenario: one where candidate B is a [[Condorcet winner]] (able to beat either rival in a one-on-one race) but an honest plurality loser (with the smallest faction of direct supporters). This is more common than one might think; candidate B is fighting an ideological battle on two fronts, while candidates A and C are free to triangulate towards the middle without losing supporters, so the fact that B has the smallest direct support may not reflect a lack of quality. Thus, generally speaking, as long as each faction considers their second choice to be more than half as good as their first choice (taking the worst choice as 0), it's pretty clear that the Condorcet-winner candidate B is the one who democratically "should" win this election.
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