election_title: Spoiler — a split coalition hands the seat to the minority
scenario_description: |-
  100 voters. A progressive coalition — Green, Labour, and SocialDem — is a clear
  66% MAJORITY. One Conservative holds the other 34%.

  Under Choose-One Plurality each voter names a single party, so the coalition
  splits: Green 24, Labour 22, SocialDem 20. The Conservative wins with just 34
  of 100 — a candidate two-thirds of voters ranked LAST. That is the spoiler
  effect at full force.

  STAR lets every voter score all four 0–5, so coalition voters can back all
  three progressive parties. The two highest totals advance, and the automatic
  runoff elects Labour — the coalition's broad consensus pick — not the minority
  Conservative. Watch the [Vote-splitting check] confirm it.

blocs:
  Coalition: [Green, Labour, SocialDem]

voting_method: STAR
num_winners: 1

ballots: |-
  Count:Green,Labour,SocialDem,Conservative
  24:5,4,2,0   # Green base — also like Labour
  22:4,5,4,0   # Labour base — like the whole coalition
  20:2,4,5,0   # SocialDem base — also like Labour
  34:0,0,0,5   # Conservative bloc

expected_winners:
  - Labour

# file: 01_political_left_split.yaml