Former Governor of Enugu state and Senator representing Enugu East in the Senate, Dr Chimaroke Nnamani, has formally withdrawn his membership of the Peoples Democratic Party (PDP) just as he expressed appreciation to his constituents for the unalloyed support over the years. Nnamani, in a release issued on Monday, said he has consulted with his associates and constituents alike and have decided to quit the PDP on account of irreconcilable differences with the national leadership of the party. He said he has moved on and hoped that his modest contributions to the development of his constituency will be the building blocks on which his successors can build on.