The cover graphic for this issue symbolizes the process of mourning, in recognition, as per our standard practice, of the theme of the issue's lead article. By unhappy coincidence, that theme is doubly appropriate, for it also marks the recent passing of Nelson W. Polsby, the editor of the Review from 1970 to 1976. A larger-than-life figure, innovative scholar, sage political commentator, indefatigable conversationalist, and beloved mentor, Nelson Polsby was truly one of a kind – sometimes cantankerous but unfailingly gregarious and never quite able, despite what sometimes seemed to be his best efforts, to disguise his essential kindness. He will be – already is – missed.