An election is held among four candidates (A, B, C, and D). Using a voting method we will call X, the winner of the election is candidate A. Due to an irregularity in the original procedures, a new election is required. Before the new election takes place, one of the voters changes his mind and moves A from third choice to first choice on his ballot. All other voters vote the same way they did in the original election. In the new election, still using voting method X, candidate D wins the election. Based on this information, which criterion can say that voting method X violates? A) majority B) IIA C) monotonicity D) Condorcet

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12) An election is held among four candidates (A, B, C, and D). Using a voting method we will call X, the winner of
the election is candidate A. Due to an irregularity in the original procedures, a new election is required. Before
the new election takes place, one of the voters changes his mind and moves A from third choice to first choice
on his ballot. All other voters vote the same way they did in the original election. In the new election, still using
voting method X, candidate D wins the election. Based on this information, which criterion can say that voting
method X violates?
A) majority
B) IIA
C) monotonicity
D) Condorcet
Transcribed Image Text:12) An election is held among four candidates (A, B, C, and D). Using a voting method we will call X, the winner of the election is candidate A. Due to an irregularity in the original procedures, a new election is required. Before the new election takes place, one of the voters changes his mind and moves A from third choice to first choice on his ballot. All other voters vote the same way they did in the original election. In the new election, still using voting method X, candidate D wins the election. Based on this information, which criterion can say that voting method X violates? A) majority B) IIA C) monotonicity D) Condorcet
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