Abubakar Ayuba was born on 12/06/45. He attended the Armed Forces Command and Staff College, Jaji in 1978, and the MNI National Institute for Policy & Strategic Studies, Kuru. In the army, he became a Commander of the Corps of Signal, and a Major General. Under military rule he was appointed Minister of Communications, Military Governor of Kaduna State, Chief of Administration and Chief of Policy and Plans. He was appointed governor of Kaduna State in August 1990 during the military regime of General Ibrahim Babangida, handing over to the elected civilian governor Mohammed Dabo Lere in January 1992 at the start of the abortive Nigerian Third Republic.
Abubakar Ayuba was elected on the People's Democratic Party (PDP) platform in April 2007. He was appointed to committees on Science & Technology, Police Affairs, Navy, National Planning, Integration and Cooperation, Defence & Army and Communications In January 2008, Leadership paper reported that Abubakar Tanko Ayuba was one of the first senators to have his election nullified, but that he was appealing the decision.
In September 2008, he was awarded the prestigious 'Nelson Mandela Gold Award' for his excellent leadership and contributions to society. In a May 2009 mid-term assessment of senators, This Day newspaper rated noted that Ayuba had not sponsored any bills and was not always around due to ill-health, although he was present for the number of days set by the constitution.