election_title: "Exercise 2 — The tenth ballot: Bella withdraws"

scenario_description: |-
  The original nine ballots with Bella's column removed — she withdrew before
  the count, and no scores change for anyone else. Scoring round: Alex 27,
  Chris 24, Eli 22, Dana 20 — with Bella gone, Chris takes her runoff slot and
  beats Alex head-to-head 6-3. A candidate who was NOT going to win still
  changed who does (a runoff-slot spoiler, the independence-of-irrelevant-
  alternatives family): Bella's presence was what kept Chris out of the
  runoff. Part of the exercise ex02_tenth_ballot.md. Ballots adapted from a
  RangeVoting.org example, posed as an exercise in Brendan W. Sullivan,
  "An Introduction to the Math of Voting Methods" (2022), ch. 5.
voting_method: STAR
num_winners: 1
ballots: |-
  Alex,Chris,Dana,Eli
  3,4,5,0 # 4 voters: Dana first, Chris close second
  3,4,5,0
  3,4,5,0
  3,4,5,0
  3,0,0,4 # 3 voters: (Bella was their favorite) Eli second
  3,0,0,4
  3,0,0,4
  3,4,0,5 # 2 voters: Eli first, Chris second
  3,4,0,5
expected_winners:
  - Chris

# file: ex02_bella_exits.yaml