Gallagher Disproportionality Index Calculator

Measure electoral disproportionality between vote shares and seat shares using the Gallagher (least squares) index. Compare electoral systems for fairness.

 
0
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
Advertisement

How It Works

Measure electoral disproportionality between vote shares and seat shares using the Gallagher (least squares) index. Compare electoral systems for fairness

Each component has a specific meaning:

  • Gallagher index — The gallagher index recorded for the patient or scenario being assessed.

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

How to Use

Enter the Gallagher index for the patient or scenario you are assessing. Measure electoral disproportionality between vote shares and seat shares using the Gallagher (least squares) index. Compare electoral systems for fairness. Use the gallagher index result to inform your clinical assessment.

Frequently Asked Questions