Appointments to appellate courts are generally provided for by a scheme calculated to prevent any sudden and general changes of membership. Not more than one or two receive an appointment in any one year, so that the terms of not more than one or two can expire at the same time. Where judges hold for life or--as is frequently the case--if there is a constitutional provision that no judge shall hold office after reaching the age of seventy, the vacancies will, of course, occur and be filled at irregular intervals. All this, in connection with the natural tendency to reappoint judges who have earned the public confidence, secures to the court a certain continuity of existence and consistency of view. In every court of last resort in the older States there will be apt to be found some who have served ten or twenty years and were at first associated with those who had themselves then served as long. It is not easy to "pack" a court thus constituted. If, however, some question of supreme political importance is looming up, likely soon to become the subject of litigation, the nominating or appointing power is not likely to be insensible of the party advantages that may result from its decision in a particular way by the highest judicial authority, nor of the importance of the vote to be cast by each who may share in its administration. During the Civil War Congress passed a conscription law. The Supreme Court of Pennsylvania pronounced it unconstitutional, and advised the issue of a temporary injunction to prevent its enforcement by the officials charged with that function. The term of the Chief Justice was about to expire. The decision had been made by three judges, of whom he was one, against two who dissented. The political party to which he belonged renominated him, but he was defeated at the polls. A motion was soon afterwards made to dissolve the injunction. His successor joined with the former minority in advising that the motion be granted, and on the ground that the Act of Congress was not unconstitutional. The two remaining members of the court adhered to their former opinion.[Footnote: Kneedler _v._ Lane, 45 Penn. State Reports, 238. See this case reviewed in Pomeroy, "Introduction to the Constitutional Law of the United States," Sec. 479.]