The two parties have picked on former envoy to the Democratic Republic of Congo Adrian Bauleni.
The ruling Patriotic Front have picked loosing candidate Sylvia Masebo.
UNIP is contesting using Johannes Mativenga. The Forum for Democracy and Development has pushed a David Chulu.
And the MMD and UPND will also support each other in the Magoye and Nakonde Bye-elections scheduled for the same day as Chongwe