Mr Ahmed Wadada said the appointments was a reward and motivation for those who worked to ensure that he won the election.
“The decision is borne out of the shameful display of illegality, impunity and undemocratic decisions of the party.”
A violent protest disrupted the All Progressive Congress Nasarawa-West senatorial primary election that was held on Sunday to elect a candidate for the 2023 elections.
Mr Adamu’s resignation follows his election as the national chairman of the ruling party in the recently concluded APC Convention.