When there are only two or three candidates, nonmanipulability and monotonicity are exactly the same thing.

Question

Quizplus · Accepted Answer

Nonmanipulability and monotonicity are distinct concepts in voting theory. Nonmanipulability refers to the inability of voters to change the outcome to their advantage by misrepresenting their preferences, while monotonicity means that ranking a candidate higher should not harm their chances of winning. These concepts do not equate even with two or three candidates.

When There Are Only Two or Three Candidates, Nonmanipulability and Monotonicity