Effective Number of Parties Index

Calculate the Laakso-Taagepera effective number of electoral or parliamentary parties to measure party system fragmentation and compare across countries.

 
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Physical Constants Reference
ConstantSymbolValue
Speed of lightc2.99792458×10⁸
Planck's constanth6.62607015×10⁻³‴
Boltzmann constant1.380649×10⁻²³
Avogadro's numberNₐ6.02214076×10²³
Gravitational constantG6.6743×10⁻¹¹
Gas constantR8.31446
Elementary chargee1.602176634×10⁻¹⁹
Electron massmₑ9.1093837015×10⁻³¹
Proton massmₚ1.67262192369×10⁻²⁷
Fine-structure constantα7.2973525693×10⁻³
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How It Works

Calculate the Laakso-Taagepera effective number of electoral or parliamentary parties to measure party system fragmentation and compare across countries

Each component has a specific meaning:

  • Countries — The countries recorded for the patient or scenario being assessed.

Note: Interpret the effective parties index result against the clinical thresholds and context described above.

How to Use

Enter the countries for the patient or scenario you are assessing. Calculate the Laakso-Taagepera effective number of electoral or parliamentary parties to measure party system fragmentation and compare across countries. Use the effective parties index result to inform your clinical assessment.

Frequently Asked Questions