On 19 September 2015, the Zimbabwe Election Support Network (ZESN), at the invitation of the Zimbabwe Electoral Commission (ZEC), observed parliamentary by-elections in Epworth, Marondera Central and Mbire constituencies.
The seats fell vacant following the death on 9 June, 2015 of the ZANU-PF incumbent for Epworth constituency, Ambassador Amos Midzi; and the expulsion from ZANU-PF and subsequent recalling from Parliament of Ray Kaukonde and David Butau, former Members of Parliament for Marondera Central and Mbire respectively:more