Tribes have the right to determine their own membership. These criteria for enrollment vary from tribe to tribe. In the Midwest, the criteria are based on descendancy, that is, descent from an individual on a particular roll, as well as, in some cases, blood quantum and/or residency of the applicant or his/her parents. Most tribes also have constitutional provisions for adoption of members. Individuals who are enrolled in a particular tribe have rights that include hunting, fishing, and gathering on tribal land (or in some cases off-reservation), as well as per capita payments if the tribe distributes income from court cases or businesses. Other benefits include preferential hiring for tribal jobs, entitlement to certain services, the right to vote and run for tribal office, use of tribal land, and preferential selection for tribal housing.