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SOURCE FILE:     bv2184_fyy886_lunch_vote.yaml
TABULATED FILE:  bv2184_fyy886_lunch_vote_tabulated.txt
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election_title: BV2184 — The team lunch vote
election_description: |-
  Live on BetterVoting (BV2184, election fyy886).
  Results: https://bettervoting.com/fyy886/results
  BV's STAR tally agrees with LH: winner Pizza.

bv_test_id: BV2184
bv_election_id: fyy886
bv_results_url: https://bettervoting.com/fyy886/results

scenario_description: |-
  The beginner's running example (STAR — start here). Five coworkers pick lunch
  from Sushi, Tacos, or Pizza. Two love Sushi, two love Tacos — and everyone is
  perfectly happy with Pizza. Under Choose-One each person names ONE favorite,
  so the vote splits (Sushi 2, Tacos 2, Pizza 1) and Pizza — the option nobody
  objected to — comes LAST; a coin flip hands lunch to Sushi or Tacos and half
  the team is stuck with something they rated 0. STAR reads the whole ballot:
  Pizza tops the Scoring Round (17) and wins the runoff 3-2. The compromise
  everyone can live with wins, and no one had to vote strategically. (Choose-One
  and RCV-IRV both elect Sushi here; STAR elects Pizza.)

voting_method: STAR
num_winners: 1
ballots: |-
  Sushi,Tacos,Pizza
  5,0,3
  5,0,3
  0,5,3
  0,5,3
  3,1,5

expected_winners:
- Pizza

# file: bv2184_fyy886_lunch_vote.yaml

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TABULATION RESULTS
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=== BV2184 — The team lunch vote ===
  The beginner's running example (STAR — start here). Five coworkers pick lunch
  from Sushi, Tacos, or Pizza. Two love Sushi, two love Tacos — and everyone is
  perfectly happy with Pizza. Under Choose-One each person names ONE favorite,
  so the vote splits (Sushi 2, Tacos 2, Pizza 1) and Pizza — the option nobody
  objected to — comes LAST; a coin flip hands lunch to Sushi or Tacos and half
  the team is stuck with something they rated 0. STAR reads the whole ballot:
  Pizza tops the Scoring Round (17) and wins the runoff 3-2. The compromise
  everyone can live with wins, and no one had to vote strategically. (Choose-One
  and RCV-IRV both elect Sushi here; STAR elects Pizza.)

--- Runoff (Preference) Matrix ---
Head-to-head / pairwise comparison
Legend: For - Equal Support - Against
        * indicates Top 2 Finalist
               |  * Sushi   |   Tacos   | * Pizza   |
-----------------------------------------------------
     * Sushi > |    ---     |3 - 0 - 2  |2 - 0 - 3  |
       Tacos > | 2 - 0 - 3  |   ---     |2 - 0 - 3  |
     * Pizza > | 3 - 0 - 2  |3 - 0 - 2  |   ---     |

[Condorcet Winner]
  Condorcet Winner: Pizza — matches the STAR winner

[Condorcet Loser]
  Condorcet Loser: Tacos — loses every head-to-head matchup

[Divergence from STAR]
  STAR                   = Pizza
  Choose-One (Plurality) = Sushi   (differs from STAR)
  RCV-IRV                = Sushi   (differs from STAR)
  Note: no ballots had tied scores, so RCV-IRV vs STAR here is a genuine
        method difference, not a tie-breaking artifact.
  Note: Ranked Robin (RCV-RR) agrees with STAR, so RCV-IRV is the lone
        outlier — the classic center-squeeze signature.
  Full round-by-round reports (generated for review):
  RCV-IRV rounds: cases_tabulated/bv2184_fyy886_lunch_vote_RCV-IRV_tabulated.txt

--- STAR Voting Method (single winner) ---
[STAR Voting]
 Tabulating 5 ballots.
Count × Sushi,Tacos,Pizza
    2 ×     5,    0,    3
    2 ×     0,    5,    3
    1 ×     3,    1,    5

[Score Distribution] (how many ballots gave each star rating)
                Score
Candidate  5  4  3  2  1  0  | Total   Avg
Sushi      2  0  1  0  0  2  |    13   2.6
Tacos      2  0  0  0  1  2  |    11   2.2
Pizza      1  0  4  0  0  0  |    17   3.4

[STAR Voting: Scoring Round]
 The two highest-scoring candidates advance to the next round.
   Pizza         -- 17 -- First place
   Sushi         -- 13 -- Second place
   Tacos         -- 11
 Pizza and Sushi advance.

[STAR Voting: Automatic Runoff Round]
 The candidate preferred in the most head-to-head matchups wins.
   Pizza         -- 3 -- First place
   Sushi         -- 2
   Equal Support -- 0
 Pizza wins.
   Runoff math:
     5  ballots cast
   − 0  Equal Support (no preference between the two finalists)
     ─
     5  voters with a preference  (majority = 3)
           Pizza 3 (60%)  ·  Sushi 2 (40%)

[STAR Voting: Winner — STAR Voting Method (single winner)]
 Pizza