Nelson Chamisa, who came second in elections last year, says his party has been "hijacked".

Provides an overview of Zimbabwe, including key dates and facts about this southern African country.

Mnangagwa came to power in Zimbabwe after a 2017 coup which ousted long-time ruler Robert Mugabe.

What drives Robert Mugabe's ouster, Emmerson Mnangagwa, as he seeks a second term in office?

It is exactly five years since Zimbabwe's ex-president left power but life is now worse for many.

A host of by-elections present a key test for the new opposition and the country's democratic credentials.