USCIS 128:54. How many Supreme Court justices are usually needed to decide a case?

OpenAI. (2026).  How many Supreme Court justices are usually needed to decide a case?    [AI-generated infographic]. OpenAI.  Edited by Jennifer Gagliardi

The Supreme Court has nine justices. When the Court decides a case, the justices study the law, read legal documents, and listen to arguments from lawyers.

To decide a case, the justices vote. Usually, at least five justices must agree on a decision. This is called a majority.

When five or more justices agree, their opinion becomes the decision of the Court. This decision explains how the law should be understood and applied.