Stable Voting

Violation of Negative Involvement

Profile type: Profile
Config: 4 c, 6 v
Parameters: check_probabilities=True

1 wins in the full profile, but 1 is a loser after removing a voter with the ranking (0, 3, 2, 1):

Full profile
+---+---+---+---+---+
| 1 | 1 | 1 | 1 | 2 |
+---+---+---+---+---+
| 0 | 1 | 2 | 2 | 3 |
| 3 | 2 | 0 | 1 | 1 |
| 2 | 0 | 3 | 0 | 2 |
| 1 | 3 | 1 | 3 | 0 |
+---+---+---+---+---+
Profile([[0, 3, 2, 1], [1, 2, 0, 3], [2, 0, 3, 1], [2, 1, 0, 3], [3, 1, 2, 0]], rcounts=[1, 1, 1, 1, 2], cmap={0: '0', 1: '1', 2: '2', 3: '3'})
Stable Voting winners are {1, 2, 3}

Profile with voter removed
+---+---+---+---+
| 1 | 1 | 1 | 2 |
+---+---+---+---+
| 1 | 2 | 2 | 3 |
| 2 | 0 | 1 | 1 |
| 0 | 3 | 0 | 2 |
| 3 | 1 | 3 | 0 |
+---+---+---+---+
Profile([[1, 2, 0, 3], [2, 0, 3, 1], [2, 1, 0, 3], [3, 1, 2, 0]], rcounts=[1, 1, 1, 2], cmap={0: '0', 1: '1', 2: '2', 3: '3'})
Stable Voting winner is {2}