Enyinnaya Abaribe, tendered his resignation as Senate Minority leader and dumped the opposition Peoples Democratic Party (PDP).
Mr Abaribe has joined the All Progressive Grand Alliance, APGA.
The lawmaker, who confirmed the development to Vanguard on Friday, said he would be participating in the party’s senatorial primaries tomorrow (Saturday).
A member of the APGA Board of Trustees BoT, Chief Ahamdi Nweke, also confirmed that Senator Abaribe “is now fully with APGA”.
He said: ”The most-ranking Senator in Abia has joined the progressives to deliver Abia from the clutches of the forces that have held the state down.
”He is coming with hundreds and thousands of PDP members who are aggrieved by the lack of internal democracy in the party.”