He announced this in a state broadcast on Friday.
The governor said he moved with all his cabinet members, appointees, and elected local government chairmen.
He said that his decision was made in the interest of the people of Adamawa State and national unity, emphasising the need for stronger alignment with the Federal Government to advance development priorities.
The Speaker of the Adamawa State House of Assembly, Wesley Bathiya, had on Wednesday resigned his membership of the Peoples Democratic Party (PDP) alongside 14 other lawmakers.
The Speaker made the announcement during plenary, presenting letters of resignation from the affected members.
After concluding legislative business, he called for order and read the letters of withdrawal one after another, confirming their exit from the ruling party.
One of the defecting lawmakers, Mahmud Kallamu, chairman of the House Committee on Information, described the move as strategic.
An APC lawmaker, speaking on the sidelines, said the party would welcome the defectors if they chose to join.
