[1] At the session of the Preparatory Committee for Indonesian Independence on the same day, Teuku Muhammad Hasan was nominated as the Governor of Sumatra.

On 17 December 1947, Hasan officially declared the formation of the junior governor's office for the three main regions.

[5] Four months later, on 14 April 1948, Sutan Mohammad Amin Nasution was inaugurated as the Junior Governor of North Sumatra.

The region's decision to inaugurate its own junior governor was formally enacted by the People's Representative Council of Sumatra at its session from 17 until 19 April 1948.

[9][10] Less than a year, the central government in Java fell to the Dutch forces after the Operation Kraai on 19 December 1948.

Before being captured by the Dutch, President Sukarno sent a telegraph message to Sjafruddin Prawiranegara in Bukittinggi giving him a mandate to create a "Republic of Indonesia government in exile".

[11] Three days later, the Emergency Government of the Republic of Indonesia, based in Bukittinggi, West Sumatra, was established.

The Chairman of the Preparatory Committee of the Unitary State for East Sumatra, Sarimin Reksodihardjo, became acting governor.

[16] He handed over his position to the definitive Governor of North Sumatra, Abdul Hakim Harahap, on 25 January 1951.

There were 2 contesting pairs in that election, Edy Rahmayadi and Musa Rajekshah against Djarot Saiful Hidayat and Sihar Sitorus.

[25] From 1948 until 1959, the Governor of North Sumatra assumed the office as the Chairman and member of the Regional Government Council.

16 of 1969 on 17 December 1969, the incumbent governor of North Sumatra became the ex officio member of the People's Consultative Assembly.