Background: John Sidney McCain III (born August 29, 1936) is an American politician serving as the senior United States Senator from Arizona since 1987. He was the Republican nominee for President of the United States in the 2008 election, which he lost to Barack Obama. McCain graduated from the U.S. Naval Academy in 1958 and followed his father and grandfather--both four-star admirals--into the United States Navy. He became a naval aviator and flew ground-attack aircraft from aircraft carriers.
Context: McCain set his sights on becoming a congressman because he was interested in current events, was ready for a new challenge, and had developed political ambitions during his time as Senate liaison. Living in Phoenix, he went to work for Hensley & Co., his new father-in-law Jim Hensley's large Anheuser-Busch beer distributorship. As vice president of public relations at the distributorship, he gained political support among the local business community, meeting powerful figures such as banker Charles Keating Jr., real estate developer Fife Symington III and newspaper publisher Darrow "Duke" Tully. In 1982, McCain ran as a Republican for an open seat in Arizona's 1st congressional district, which was being vacated by 30-year incumbent Republican John Jacob Rhodes. A newcomer to the state, McCain was hit with charges of being a carpetbagger. McCain responded to a voter making that charge with what a Phoenix Gazette columnist would later describe as "the most devastating response to a potentially troublesome political issue I've ever heard":  Listen, pal. I spent 22 years in the Navy. My father was in the Navy. My grandfather was in the Navy. We in the military service tend to move a lot. We have to live in all parts of the country, all parts of the world. I wish I could have had the luxury, like you, of growing up and living and spending my entire life in a nice place like the First District of Arizona, but I was doing other things. As a matter of fact, when I think about it now, the place I lived longest in my life was Hanoi.  McCain won a highly contested primary election with the assistance of local political endorsements, his Washington connections, and money that his wife lent to his campaign. He then easily won the general election in the heavily Republican district.  In 1983, McCain was elected to lead the incoming group of Republican representatives, and was assigned to the House Committee on Interior Affairs. Also that year, he opposed creation of a federal Martin Luther King Jr. Day, but admitted in 2008: "I was wrong and eventually realized that, in time to give full support [in 1990] for a state holiday in Arizona."  At this point, McCain's politics were mainly in line with President Ronald Reagan; this included support for Reaganomics, and he was active on Indian Affairs bills. He supported most aspects of the foreign policy of the Reagan administration, including its hardline stance against the Soviet Union and policy towards Central American conflicts, such as backing the Contras in Nicaragua. McCain opposed keeping U.S. Marines deployed in Lebanon citing unattainable objectives, and subsequently criticized President Reagan for pulling out the troops too late; in the interim, the 1983 Beirut barracks bombing killed hundreds. McCain won re-election to the House easily in 1984, and gained a spot on the House Foreign Affairs Committee. In 1985, he made his first return trip to Vietnam, and also traveled to Chile where he met with its military junta ruler, General Augusto Pinochet.
Question: What district did he represent?. Whats the answer?
Republican for an open seat in Arizona's 1st congressional district,