Majoritarian systems - Electoral disproportionality in majoritarian systems - Gallagher index

3 important questions on Majoritarian systems - Electoral disproportionality in majoritarian systems - Gallagher index

We measure electoral disproportionality with the gallagher system. What dus it measure?

The mismatch between votes received and seats obtained in parliament = electoral disproportionality.

What is the mathematical formula of the Gallagher Index?

V = votes in percentage
S = seats in percentage

Give the interpretation of the professor of the Gallagher index from 0 to unlimited

  • 0 = perfect proportionality
  • 0-5 = high proportionality - BE, NL ...
  • 5-10 = moderate proportionality
  • > 10 = low proportionality - UK

The question on the page originate from the summary of the following study material:

  • A unique study and practice tool
  • Never study anything twice again
  • Get the grades you hope for
  • 100% sure, 100% understanding
Remember faster, study better. Scientifically proven.
Trustpilot Logo