In the United States, a state supreme court (known by other names in some states) is the highest court in the state judiciary of a U.S. state. On matters of state law, the judgment of a state supreme court is considered final and binding in both state and federal courts. Generally, a state supreme court, like most appellate tribunals, is exclusively for hearing appeals of legal issues. Although state supreme court rulings on matters of state law are final, rulings on matters of federal law can be appealed to the Supreme Court of the United States. Each state supreme court consists of a panel of judges selected by methods outlined in the state constitution. Among the most common methods for selection are gubernatorial appointment, non-partisan election, and partisan election, but the different states follow a variety of procedures. Role and powers Under the system of federalism established by the United States Constitution, federal courts have limited jurisdiction, and state courts handle many more cases than do federal courts. Each of the fifty states has at least one supreme court that serves as the highest court in the state; two states, Texas and Oklahoma, have separate supreme courts for civil and criminal matters. The five permanently inhabited U.S. territories, as well Washington, D.C., each have comparable supreme courts. On matters of state law, the judgment of a state supreme court is considered final and binding in both state and federal courts. State supreme courts are completely distinct from any United States federal courts located within the geographical boundaries of a state's territory, or the federal-level Supreme Court. The exact duties and powers of the state supreme courts are established by state constitutions and state law. Generally, state supreme courts, like most appellate tribunals, are exclusively for hearing appeals on decisions issued by lower courts, and do not make any finding of facts or hold trials. They can, however, overrule the decisions of lower courts, remand cases to lower courts for further proceedings, and establish binding precedent for future cases. Some state supreme courts do have original jurisdiction over specific issues; for example, the Supreme Court of Virginia has original jurisdiction over cases of habeas corpus, mandamus, prohibition, and writs of actual innocence based on DNA or other biological evidence. Jurisdiction and appellate procedure As the highest court in the state, a state supreme court has appellate jurisdiction over all matters of