He also declared support for Senator Enyinnaya Abaribe, who is running for the Abia South senatorial district election under the umbrella of the All Progressive Grand Alliance against Governor Okezie Ikpeazu.
Abaribe had left the PDP in the build-up to the party’s primary election last year.
Chigbu, in a statement on Thursday, stated that his former party was a fraud and one that has thrown the state under the bus.
He also described the party in the state and its government as a nest of liars, who have sunk to an all-time low in the face of imminent defeat at the coming polls.
“I have to leave now before the total collapse of what remains of PDP, ” he added.
Abaribe, he said, is a symbol of what integrity and resilience is, even in the face of persecution.
The statement read, “Abia under PDP has become a laughing stock and a butt of jokes among Nigerians, particularly now.
“We must all join hands to rescue this state from the rapacious invaders who are holding the state hostage this time.
“My resignation is a patriotic duty to join other well-meaning Abians to stop the PDP from further raping our dear state with their avowed quest for primitive acquisition of wealth. Enough is enough”.
“I decided to resign because I see PDP as a fraud. I see PDP as a party that is deceiving Abians. PDP has a presidential candidate in Alhaji Atiku Abubakar and formerly a governorship candidate in Professor Uche Ikonne who just passed away and today there is a new Candidate in Chief Okey Ahaiwe.
“The presidential candidate was in Umuahia but how many people were in the stadium during the rally? At the end of the day, where was the number one citizen of Abia State and many other party leaders on a day the presidential candidate visited Abia?
“We have a new governorship candidate that they want to market and get Abians to vote for him, but he came into the stadium like an orphan.
“PDP is a party that does not take advice from anybody. I am the zonal chairman of Abia South as well as the state vice chairman. In the office, I am not recognized. Why would you pocket the little allowances of ward officers, including my allowances? PDP as of today is owing me allowances of over N20m, I am a founding member of PDP. I said I could not continue because I am not comfortable with what is happening in the party anymore.”