The lawmakers announced their defections in a letter they addressed to the Speaker and read by the clerk of the House during plenary.
Five of the lawmakers until their defections on Monday were members of the Action Alliance and one was a member of the All Progressives Grand Alliance.
The AA lawmakers who defected to PDP were Mike Iheanaetu (Aboh Mbaise), Victor Onyewuchi (Owerri West), Ken Agbim (Ahiazu Mbaise) Lloyd Chukwuemeka (Owerri North) and Bruno Ukoha (Ezinihittte Mbaise)
Chiji Collins (Isiala Mbano) defected from APGA to PDP.
It was gathered that the defection of Collins was to enable him to emerge the next Speaker of the Assembly.