Hypotheses regarding differences (or lack of differences) in policy-orientation or in degrees of influence between the various members of the Soviet Politburo have always been of great interest to students of politics. Thus there have been frequent speculations regarding alleged differences in foreign policy lines and on the problem of succession. The absence of confirming or disconfirming data for any of these hypotheses is striking, and obvious in view of the secrecy that enshrouds the internal operations of the Politburo. Published statements of any kind by members of the Politburo have become infrequent in recent years. Such statements as are available for analysis have usually dealt with different subjects and have been made at different dates, so that they were difficult to compare from the point of view of testing hypotheses regarding differences in policy of influence. Through Stalin's seventieth birthday, December 21,1949, however, a rare opportunity for comparative analysis did occur.