The semi-autonomous region plagued by political instability and security threats has become a thorn in Kenya’s side, affecting its border security and diplomatic standing in East Africa.
Ahmed Madobe was re-elected to the regional Jubaland parliament on Monday in a process the central government labelled "unlawful".
Led by Dr Abdullahi Ali and Abdi Ali Raghe, the contenders on Friday said the move by Madobe to seek a third term is a violation of the constitution.
Opposition parties in Somalia's Jubaland State have threatened to hold a parallel electoral process, over what they term "unilateral" appointment of the electoral commission.