Complex sentence: He is still one of the leaders of that Party, described as a new generation political organization in which he holds the position of Deputy Secretary General in charge of Legal Affairs and Conflict Management and Campaign Manager of Ishema Party presidential candidate in 2017 elections.
Split into simpler sentences: He is still one of the leaders of that Party, described as a new generation political organization in which he holds the position of Deputy Secretary General in charge of Legal Affairs and Conflict Management. He then became Campaign Manager of Ishema Party presidential candidate in 2017 elections.