Borda

Violation of Strategy Proofness

Profile type: Profile
Config: 3 c, 2 v
Parameters: set_preference=weak-dominance

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

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

Borda winners are {1, 2}

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

Borda winner is {2}