Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Rival Challenges Zimbabwe Election Results by VOA News Emmerson Mnangagwa and Nelson Chamisa both claim they won the presidential election, July 20, 2018. Mnangagwa took 50.8 percent of the vote, while Chamisa received 44.3 percent, according to the electoral commission, but Chamisa challenges those results.