The Political History of Military Dictatorship and Democratic Transition in Nigeria, 1983 to 1999

This study provides a chronological and analytical account of military dictatorship and the transitions to democratic civilian rule in Nigeria from the Muhammadu Buhari-Tunde Idiagbon coup of December 1983 to the inauguration of the Olusegun Obasanjo civilian administration in May 1999. This sixteen-year period encompasses the Buhari, Babangida, and Abacha military regimes, each of which adopted distinctive approaches to governance, economic management, and political transition programming. Using a descriptive historical design, the study reviews military decrees, transition programme documents, political memoirs, and secondary literature published between 2020 and 2024. The Military Authoritarianism Theory and the Democratic Transition Framework by O'Donnell and Schmitter provide the analytical lenses. Findings reveal that each military administration articulated democratic transition intentions while simultaneously entrenching institutional mechanisms to prolong military influence in civilian politics. The annulment of the June 12, 1993 presidential election by Ibrahim Babangida is identified as the most damaging single act to Nigerian democratic development in the period. The Abacha regime's repression of civil society is documented as a critical turning point in mobilising international and domestic pressure for democratic restoration. Keywords: military dictatorship, democratic transition, Babangida, Abacha, June 12.