becomes law upon its final passage and cannot be vetoed. Constitutional amendments also cannot be vetoed; they become law only upon their ratification by the voters at the next general election. Overrides. A vetoed bill is returned to the house of origin, where a vote may be taken to override the governor's veto; a three-fifths vote of both houses is required to override a veto. Effective date. Each bill that is passed by the Legislature and approved by the Governor is assigned a chapter number by the Secretary of State. These chaptered bills are statutes, and ordinarily become part of Maryland law. Ordinarily a law passed during a regular session takes effect October 1 of the same year. Emergency bills go into effect as soon as the governor signs them; these include acts calling for special elections and emergency measures necessary for the immediate preservation of the public peace, health, or safety. Recodification of articles The Maryland General Assembly gradually recodified the state laws by repealing the versions organized into numbered articles in the black volumes and re-enacting new versions, which were organized into named articles and published in the red volumes. For example, Chapter 26 of the 2002 Laws of Maryland recodified most of Article 27 into the Criminal Law Article. According to the Maryland State Department of Legislative Services, the state legislature committed to the recodification process in 1970. The revised articles were enacted in stages between 1973 and 2016; the 36th and last revised article to be enacted was the Alcoholic Beverages Article in 2016. The purpose of this process was to reorganize the laws, rather than to change their content or meaning. Until the process was completed, the laws of the state of Maryland comprised both sets of volumes. List of articles of the Code Named articles The following is a list of the 36 named articles of the code, with the year of enactment of each. Multiple entries mean that an article was enacted in stages. Agriculture (1973) Alcoholic Beverages (2016) Business Occupations and Professions (1989) Business Regulation (1992) Commercial Law (1975) Corporations and Associations (1975) Correctional Services (1999, 2008) Courts and Judicial Proceedings (1973) Criminal Law (2002) Criminal Procedure (2001, 2008) Economic Development (2008) Education (1978) Election Law (2002) Environment (1982, 1987) Estates and Trusts (1974) Family Law (1984) Financial Institutions (1980) General Provisions (2014) Health - General (1982) Health Occupations (1981) Housing and