Doug Ducey operated in the United States.
Doug Ducey . On November 4 , 2014 , Ducey won the election to become governor of the State of Arizona , the first open seat for governor in 12 years , succeeding Jan Brewer . The Republican Party , commonly referred to as the GOP ( abbreviation for Grand Old Party ) , is one of the two major contemporary political parties in the United States , the other being its historic rival , the Democratic Party . The state treasurer is Arizona state government 's chief banker and investment officer .