Tutorvo

Instant Runoff (IRV): Elimination Rounds in a Step Table

Lesson 5 of 816 minLab

This lesson is part of the course

In this lesson

You run an instant-runoff count round by round: tally, eliminate the weakest option, move its ballots to the next choice, and repeat until a winner is left.

Buy the course once for $9.99 to unlock every lesson and lab, the final exam and the certificate – lifetime access, no subscription.

Lessons in this course

  1. Preference Profiles: Ballot Types × CountsLab12 min Locked
  2. Plurality & the Majority CheckLab12 min Locked
  3. Two-Round Runoff: Top Two Go to a Second RoundLab14 min Locked
  4. Borda Count: Points by Rank with SUMPRODUCTLab14 min Locked
  5. Instant Runoff (IRV): Elimination Rounds in a Step TableLab16 min Locked
  6. Condorcet: the Pairwise Matrix & the Head-to-Head WinnerLab16 min Locked
  7. Approval Voting: Tick Every Option You AcceptLab12 min Locked
  8. Same Ballots, Different Winners: Comparing Methods & Paradoxes (with a Chart)Lab15 min Locked