By Ange KasongoKINSHASA (Reuters) - Democratic Republic of Congo's President Felix Antoine Tshisekedi was officially nominated on Sunday as candidate for the Dec. 20 presidential election by his ruling political coalition the Sacred Union. Tshisekedi is seeking a second term in the vast nation, which is the world's top cobalt supplier and No. 3 copper producer, after winning a disputed first term in a 2018 vote. On Sunday, a congress of the Sacred Union coalition that includes political heavyweights such as Defence Minister Jean Pierre Bemba and Economy Minister Vital Kamerhe, picked Tshisekedi unanimously. Tshisekedi, the son of Congo's beloved long-term opposition leader Etienne Tshisekedi, promised to root out corruption and authoritarianism and has rejected accusations by rights groups and critics that he has fallen short on his promises.

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Persons: Ange Kasongo, Felix Antoine Tshisekedi, Tshisekedi, Jean Pierre Bemba, Vital Kamerhe, Felix Tshisekedi, Andre Mbata, Congo's, Etienne Tshisekedi, Martin Fayulu, Bate Felix, Andrew Cawthorne Organizations: Democratic, Sacred Union, Sacred Union coalition, Defence, Economy, Union, Tshisekedi Locations: Ange Kasongo KINSHASA, Democratic Republic of, Rwanda, Republic, Kinshasa, Tshisekedi