It was a historic win for Navajo president-elect Buu Nygren and vice president-elect Richelle Montoya — the first woman elected to executive office in the Navajo Nation. Nygren is set to take office after defeating incumbent President Jonathan Nez in …It was a historic win for Navajo president-elect Buu Nygren and vice president-elect Richelle Montoya — the first woman elected to executive office in the Navajo Nation. Nygren is set to take office after defeating incumbent President Jonathan Nez in …