(New page: Category:MA279Fall2013Walther == The plurality vote: must it lead to a 2-party system? == Bennett Marsh, Edwin Baeza, Kenneth Brown, Amberlee Carl)
 
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== The plurality vote: must it lead to a 2-party system? ==
 
== The plurality vote: must it lead to a 2-party system? ==
 
Bennett Marsh, Edwin Baeza, Kenneth Brown, Amberlee Carl
 
Bennett Marsh, Edwin Baeza, Kenneth Brown, Amberlee Carl
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#Introduction
 +
#*How do we define a “two-party system”? What makes a party a “major party”?
 +
#*Brief discussion of plurality and how it is implemented in real elections
 +
#Duverger’s Law - plurality elections tend to encourage 2-party systems
 +
#*How it works: what is the mechanism that makes the plurality system lead to 2 dominant parties?
 +
#**Tactical Voting - tendency of voters to only vote for the strong parties. No “wasted votes”.
 +
#**Fusion of minor parties in an attempt to become stronger
 +
#*Real-world examples of the principle occurring in various political systems
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#*Counterexamples - there exist plurality systems in which there are more than 2 dominant parties
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#*Converse is not true: 2 party systems may arise even without a plurality election
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#Ways of avoiding the collapse into a 2-party system
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#*Modifications to the standard plurality system
 +
#*How a third party can become prominent when 2 dominant parties are already established
 +
#**Third parties can exploit weaknesses/mistakes of some major party
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#**Usually only happens in times of political/social turmoil - e.g. the Civil War

Revision as of 07:48, 26 September 2013


The plurality vote: must it lead to a 2-party system?

Bennett Marsh, Edwin Baeza, Kenneth Brown, Amberlee Carl

  1. Introduction
    • How do we define a “two-party system”? What makes a party a “major party”?
    • Brief discussion of plurality and how it is implemented in real elections
  2. Duverger’s Law - plurality elections tend to encourage 2-party systems
    • How it works: what is the mechanism that makes the plurality system lead to 2 dominant parties?
      • Tactical Voting - tendency of voters to only vote for the strong parties. No “wasted votes”.
      • Fusion of minor parties in an attempt to become stronger
    • Real-world examples of the principle occurring in various political systems
    • Counterexamples - there exist plurality systems in which there are more than 2 dominant parties
    • Converse is not true: 2 party systems may arise even without a plurality election
  3. Ways of avoiding the collapse into a 2-party system
    • Modifications to the standard plurality system
    • How a third party can become prominent when 2 dominant parties are already established
      • Third parties can exploit weaknesses/mistakes of some major party
      • Usually only happens in times of political/social turmoil - e.g. the Civil War

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