Nelson Chamisa, 45, is a political crowd pleaser. Back in the 1990s, he captivated students at Zimbabwe’s higher education institutions; today, he’s vying for the presidency of the country. That’s no small task; he’s looking to unseat incumbent Emmerson Mnangagwa, leader of the well entrenched, autocratic ZANU-PF. Chalton Hwende first met the Citizens Coalition for…