The coming of the New Deal may have spelled the end of the Lochner era in the federal courts, but in the state courts Lochner\u27s doctrine of economic substantive due process lives on. Since the New Deal, courts in almost every state have rebuffed the United States Supreme Court and have interpreted their own state constitutions\u27 due process clauses to provide substantive protections to economic liberties. This Article presents a comprehensive survey of state court use of economic substantive due process since the New Deal. It includes an enumeration of every instance since 1940 of a state court of highest review protecting economic liberties through state constitutional economic substantive due process. Previous work on the subject has...