The political groups in the Kizoku-in, or House of Peers, are of more importance than the scant attention paid them by both native and foreign students of Japanese government implies. In fact, one of the six groups habitually controls the House, which, in turn, is one of the strongest national second chambers existing today. As a result, the Kenkyū-kai, or Study Association, commands steady, the other groups intermittent, patronage in the form of appointments to cabinet or sub-cabinet positions and concessions to their legislative wishes. The political groups in the House of Peers became a concern of Japanese statesmen shortly after the organization of the Diet in 1890; they are today debated in relation to the proposals for legislative reform which have been repeatedly urged since 1932. Although but minor wheels in the mechanism, some knowledge of their place and function is essential to an adequate understanding of the operation of the complicated Japanese political machine.
The history, organization, and influence of these groups is not easy to determine; the scarcity of reliable sources, even in Japanese, makes doubly confusing the large number of diverse yet meaningless group titles which have been employed since 1890.