This article identifies supporters and opponents of charter schools at all levels of government and describes their motivations and behaviors. It is explained that state and local support for charter schools is most often determined by educational needs and material incentives. Different political contexts produce different charter school policies. For example, charter school legislation in Michigan was designed to increase competition among public schools. Legislation in Georgia served to deregulate public education after a period of increased state centralization. The article concludes that there is no cohesive state or local charter political pattern, given the variations in charter schools and their contexts. It remains unclear whether national charter school advocates have enough influence to expand the number of charter schools significantly. Local policymakers in areas with few educational pressures, such as some suburban communities, may resist change. Charter schools could end up as a marginal reform that impacts small numbers of students in urban centers, or continue their impressive growth, but it is state and local politics that will decide.