The Ohio Supreme Court on Wednesday heard arguments in a case that centers on Gov. Ted Strickland's plan to allow 17,500 slot machines at racetracks. Attorneys for the state argued that slot machine revenue was included in the state budget, so voters cannot overturn the plan. Opponents of the plan support a referendum and argued that Ohio voters have defeated plans to expand gambling four times since 1990. Observers expect the court to rule in several months.