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MENTAL MODEL · M1956

Spoiler Effect

Spoiler Effect
DecideHigh supportGame Theory
Included
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

In an election or competition, the entry of a third-party candidate who is destined to lose (the spoiler) splits the votes of a major candidate, thereby leading to the victory of the opposing candidate with contrary ideology.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Analyze multi-party games. If you cannot defeat your opponent, you can support a 'spoiler' similar to your opponent to divide their resources. This is common in business competition (launching a low-priced sub-brand) and politics.

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Under plurality voting with single-member districts, a spoiler with similar stance splits the votes of the same camp, allowing the opposing camp to win with a relative majority. The essence is 'same-kind competition, different-kind benefit' vote splitting. It can be actively used: support a similar spoiler to divide the opponent.

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Source support: Explicit

  • link
    en.wikipedia.orghttps://en.wikipedia.org/wiki/Spoiler_effectZH · Explicit
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