While each state in the United States has one Supreme Court, Oklahoma and Texas have two, one for civil appeals and one for criminal appeals.
The courts are composed by associate justices. In Oklahoma there are nine associate justices appointed by the Governor through a nominating comission for a one year term, initially, and, if retained, the justice associate is able to assume a six year term. In Texas, there are nine associate justices as well, but nominated through a partisan election for a six year term.