Voting & Fairness
Math · Intermediate · Lesson 1 of 7

Voting Methods

Plurality, runoff, Borda

An interactive lesson with 6 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

  • Plurality counts only first choices. Runoff and Borda use full rankings.
  • The same ballots can produce different winners under different methods.
  • A plurality winner can be ranked last by a majority.

Steps

  1. One election, nine voters
  2. Plurality
  3. Borda count
  4. Make the methods disagree
  5. Borda points
  6. Approval voting