PHOENIX (AP) — Tom Forese and Doug Little were winners in the Republican primary in a heated four-way race for two open seats on the Arizona Corporation Commission.

Little and Forese beat out Lucy Mason and Vernon Parker in Tuesday's GOP election.

The Democrats candidates in the November general election for four-year commission terms are Jim Holway and Sandra Kennedy.

The five-member commission is considered a separate branch of state government. It sets rates for regulated utilities such as water and power providers.

The commission also handles corporate registrations and is responsible for ensuring safety of railroads and pipelines.