Monotonicity Criterion - Wikipedia - en.wikipedia.org ![rw-book-cover|200x400](https://readwise-assets.s3.amazonaws.com/static/images/article3.5c705a01b476.png) ## Metadata - Author: **en.wikipedia.org** - Full Title: Monotonicity Criterion - Wikipedia - Category: #articles - Tags: #game-theory - URL: https://en.wikipedia.org/wiki/Monotonicity_criterion ## Highlights - The monotonicity criterion is a voting system criterion used to evaluate both single and multiple winner ranked voting systems. A ranked voting system is monotonic if it is neither possible to prevent the election of a candidate by ranking them higher on some of the ballots, nor possible to elect an otherwise unelected candidate by ranking them lower on some of the ballots (while nothing else is altered on any ballot).[1] That is to say, in single winner elections no winner is harmed by up-ranking and no loser is helped by down-ranking. Douglas Woodall called the criterion mono-raise.