出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/07/05 06:57 UTC 版)
The cube rule or cube law is an empirical observation regarding democratic elections under the first-past-the-post system. The rule suggests that the party getting the most votes is over-represented (and conversely, the party getting the least votes is under-represented). It was first formulated in a report on British elections in 1909, then extended to elections in other countries. Both in theory and in practice, the cube rule is only applicable in a two-party system. In a multi-party democracy operating under the first-past-the-post system[1], the cube law invariably fails, often leading to capricious results.