The most striking feature of Carl Hayden's political career was its longevity. He spent sixty-seven of his ninety-four years of life in public office.
Between 1900 and 1912 he learned the art of politics by serving in a variety of local and county positions in the Territory of Arizona. When statehood was achieved in the latter year voters elected their native son to the House of Representatives, kept him their for seven terms, and in 1926 promoted him to the Senate where he remained until his retirement in 1969. During his fifty-four years in the federal government he served with ten presidents, beginning with William Howard Taft and ending with Lyndon Baines Johnson.