County governments are typically comprised of an elected body, usually called a county commission or a board of supervisors, and a judiciary. Some counties also have an elected executive called a county executive or a county mayor, but many do not. Some states do not have counties but have other regional governments such as boroughs. County or regional governments are typically specified in state constitutions, and counties are often tasked with administering state laws. While the functions of county and regional governments vary by state, they are often responsible for many areas with STEM-related issues including health, elections, and justice.