One of the SRC's first acts was to prohibit the existence of any political association. Under Soviet pressure to create a communist party structure to replace Somalia's military regime, Siad Barre had announced as early as 1971 the SRC's intention to establish a one-party state. The SRC already had begun organizing what was described as a "vanguard of the revolution" composed of members of a socialist elite drawn from the military and the civilian sectors. The National Public Relations Office (retitled the National Political Office in 1973) was formed to propagate scientific socialism with the support of the Ministry of Information and National Guidance through orientation centers that had been built around the country, generally as local selfhelp projects.

The SRC convened a congress of the Somali Revolutionary Socialist Party (SRSP) in June 1976 and voted to establish the Supreme Council as the new party's central committee. The council included the nineteen officers who composed the SRC, in addition to civilian advisers, heads of ministries, and other public figures. Civilians accounted for a majority of the Supreme Council's seventy-three members. On July 1, 1976, the SRC dissolved itself, formally vesting power over the government in the SRSP under the direction of the Supreme Council.

In theory the SRSP's creation marked the end of military rule, but in practice real power over the party and the government remained with the small group of military officers who had been most influential in the SRC. Decision-making power resided with the new party's politburo, a select committee of the Supreme Council that was composed of five former SRC members, including Siad Barre and his son-in-law, NSS chief Abdullah. Siad Barre was also secretary general of the SRSP, as well as chairman of the Council of Ministers, which had replaced the CSS in 1981. Military influence in the new government increased with the assignment of former SRC members to additional ministerial posts. The MOD circle also had wide representation on the Supreme Council and in other party organs. Upon the establishment of the SRSP, the National Political Office was abolished; local party leadership assumed its functions.