The Arizona Supreme Court is expected to rule today on a suit challenging a new state law changing the nominating process for appeals court judges. The lawsuit alleges the law is unconstitutional because it effectively changes part of the Arizona Constitution without voter approval. It was filed on behalf of members of a state judicial nominating commission. Attorneys for the state called the changes minor and urged the high court to uphold the law. House Bill 2600 was signed by Arizona Governor Jan Brewer in April. The bill increases the minimum number of nominees for each vacancy to five from the current constitutional requirement of three. The bill was introduced just months after voters rejected an overhaul of the state's judicial nominating process.