Disapproval voting is any voting system that allows many voters to express formal disapproval simultaneously, in a system where they all share some power. Unlike most voting systems, it requires that only negative measures or choices be presented to the voter or representative. If used to select candidates for an office, or for continuation to a next round of voting or play, it is either single- or multi-winner, as everyone who is not disapproved of is in effect a winner, for that round.