A former Secretary to the Anambra State Government, Mr.
Obaze's closest rival, Dr. Alex Obiogbolu, scored 190.
A former Minister of Aviation, Stella Oduah and other contestants - Linda Ikpeazu and John Emeka - had withdrawn from the poll before the commencement of accreditation over alleged irregularities in the party's delegates' list.
Reacting to the exercise, Uba commended the security operatives for the peaceful conduct of the poll.
He, however, claimed that the delegates' list was doctored from what was monitored by the Independent National Electoral Commission (INEC).
The oil magnate has vowed to challenge the result of the exercise in court.