 State agencies promulgate regulations with the California Regulatory Notice Register, which are in turn codified in the California Code of Regulations.California's legal system is based on common law, which is interpreted by case law through the decisions of the Supreme Court of California, California Courts of Appeal, and Appellate Divisions of the Superior Courts of California, and published in the "California Reports", "California Appellate Reports", and "California Appellate Reports Supplement", 

The California Constitution in turn is subordinate to the Constitution of the United States, which is the supreme law of the land.e Code of Civil Procedure, the Penal Code, and the Political Code (which much later would become the Elections Code).