What is the fine-grained topic of the following text: Kinshasa has the largest number of candidates with 5734, followed by Bandundu (2325), Katanga (2255), Kasai Oriental (1516), Equateur (1463), North Kivu (1457), Kasai Occidental (1304), Orientale Province (1259), Bas-Congo (980), South Kivu (879) and Maniema (325). Only return the topic.
Number of candidates from various regions in Congo