Solwezi District Electoral Officer, Venture Kafula, said the postponement is as a result of the formal separation of the two districts from Solwezi district which calls for the two to have chairpersons elected independently.
Mr Kafula, who is also Solwezi Town Clerk, was speaking in Solwezi during a briefing with members of various political parties, civil society and the media organisations.
He said the ECZ will advise when fresh nominations and elections will be held in the two districts.
Mr Kafula called on political players to concentrate on soliciting votes for Presidential, Parliamentary and local government candidates in the two districts.
President Edgar Lungu last year declared Solwezi East Constituency as Mushindamo district while Solwezi West is Kalumbila district.