Final answer:
A supermajority is a voting rule that requires more than a simple majority to pass legislation. It is often used for important or consequential decisions. For example, changes to the Japanese constitution require the support of two-thirds of each chamber in the Diet and a majority in a public referendum.
Step-by-step explanation:
A supermajority is a voting rule that requires more than a simple majority to pass legislation. It is often used for important or consequential decisions, such as amending a constitution. For example, changes to the Japanese constitution require the support of two-thirds of each chamber in the Diet and a majority in a public referendum. In the United States Senate, legislation needs a supermajority of 60 senators to end a filibuster and come to a vote.