They came up with the arrangement in the early hours of Tuesday after a meeting of key stakeholders in Abuja presided over by Governor Ben Ayade.
Ayade was said to have begged the stakeholders to unite and present a consensus aspirant from the South.
The Governor reportedly picked Otu, stating acceptability and popularity were responsible for the choice.
Bayelsa Times learnt that other aspirants, including Arch. Bassey Eyo Ndem, Prof. Eyo Etim Nyong, Asuquo Ekpeyong Jnr, Engr. Ben Akak, Engr. Nsa Ekpeyong Asuquo, Chief Ogbang Ebock and a host of others mostly from the southern senatorial district conceded to the choice.
But two aspirants, Senator John Owan-Enoh and Chief Chris Agara, from the central senatorial district, refused the consensus arrangement instantly.