As ghostwriter, campaign adviser, and grey eminence behind the conservative fortunes of Republican Senator Barry Goldwater. Arizona's Stephen C. Shadegg, 52, is known among the knowing as one of the nation's top backstage political managers. Last week, to the surprise of most who know him, Shadegg jumped into the glare of the footlights. Resigning as Arizona's Republican state chairman, he announced that he would seek the Republican nomination for U.S. Senator.
He then hopes to take on Democrat Carl Hayden, 84, who has represented Arizona in either the U.S. House or Senate ever since...