Tambuwal defeated his opponent with 342 votes.
Ganduje won with a margin of 8,982 votes.
Taraba, traditionally is a PDP state since 1999.
Mr Masari ran the race on the platform of the ruling All Progressive Congress (APC) defeating Yakubu Lado, candidate of the opposing Peoples Democratic Party (PDP).
Mr El-rufai, candidate of the All Progressive Congress (APC) defeated Isa Ashiru, of the Peoples Democratic Party (PDP).
By this, Jibrila Bindow, the state governor and APC candidate, seeking a second term in office has lost his re-election bid to Ahmadu Fintiri, candidate of the PDP in the election.
Abdulrahman Abdulrasaq, the APC candidate which won the race polled 331,546 votes.
Mr Kwankwaso, a former governor of the state, made the declaration on Sunday at the presidential rally of the PDP which held at the Sani Abacha stadium.
Mr Obi, a former Anambra State governor, is the running mate of Atiku Abubakar, the candidate of the PDP for the presidential election next weekend.
Mr Ortom also dismissed the allegation by the senator that he armed livestock guards.