Anti-Plurality

Violation of Strategy Proofness

Profile type: Profile
Config: 3 c, 3 v
Parameters: set_preference=optimist

Violation of Strategy-Proofness for Anti-Plurality under the optimist set preference.
A voter can benefit by changing their ranking from (1, 2, 0) to (0, 1, 2).

Original Profile:
+---+---+---+
| 1 | 1 | 1 |
+---+---+---+
| 1 | 2 | 2 |
| 2 | 0 | 1 |
| 0 | 1 | 0 |
+---+---+---+
Profile([[1, 2, 0], [2, 0, 1], [2, 1, 0]], rcounts=[1, 1, 1], cmap={0: '0', 1: '1', 2: '2'})

Anti-Plurality winner is {2}

New Profile:
+---+---+---+
| 1 | 1 | 1 |
+---+---+---+
| 2 | 2 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 2 |
+---+---+---+
Profile([[2, 0, 1], [2, 1, 0], [0, 1, 2]], rcounts=[1, 1, 1], cmap={0: '0', 1: '1', 2: '2'})

Anti-Plurality winners are {0, 1, 2}