That the legal profession is not monolithic, but consists of a group of specialties, is well-known. In this respect, the legal profession's structure is similar to that of other professions that have been studied. The structural conditions conducive to the growth of specialties arise from the inability of any individual to master all the techniques and knowledge of a complex occupation. In law, the specialties are usually organized around a field of legal doctrine, such as probate; tasks, such as litigation and legal research; or client relationships, such as house counsel and government lawyers. A given law practice or career, of course, may and typically does include more than one specialty. Public office-holding is another prominent part of the work that lawyers do, but it has so far hardly been taken into account by the legal profession as part of its work. Indeed, many discussions of lawyers' work barely mention their involvement in politics, except for offhand references. Yet the evidence shows that public office-holding figures importantly in the lawyer's world of work. Even beyond occasional office-holding, evidence to be cited in this paper suggests that for some lawyers public office-holding takes on some characteristics of a career, perhaps amounting to another specialty within law. Admittedly, the uncertainties and risks of public office mean that few men who go into politics give up their other means of livelihood entirely. Yet some men become sufficiently involved in public office-holding for both them and observers to think of it in career terms.