Unanimous consensus criterion
An alternative that is consented by all voters is called a unanimous consensus winner. It is possible that no such winner exists in a given election. Also, in a given election with two or more alternatives, there can exist more than one unanimous consensus winner. Voting systems that guarantee the election of a unanimous consensus winner must have a tie-breaking mechanism among multiple winners in order to be decisive.
Any voting system that satisfies the greatest possible consensus criterion necessarily satisfies this criterion.