In a unanimous decision, the apex court upheld the order of the governorship election petition tribunal.
Speaking on the role politicians played during the polls, Amadi said the political class remains the biggest challenge to the electoral system in the country.
Mr Diri is seeking reelection on the platform of the Peoples Democratic Party. He faces stiff opposition from a former governor and ex-petroleum minister, Timipre Sylva of APC.
“To be precise, we are going to use more than 900 backup BVAS. This is because some polling units have more than 1,000 to 2,000 registered voters.”
Mr Longpet also disclosed that the commission has recruited over 15,000 ad hoc staff to help it in the smooth conduct of the polls.
The warning followed an accusation by the SDP that INEC was configuring BVAS machines at the Government House, Lokoja, to manipulate the state governorship election.
INEC says its results viewing portal is to enhance election transparency and not a result collation or transmission system.
He said that 16 political parties had fielded candidates for the election.
The tribunal led by Justice Oken Inneh had reserved judgment following the adoption of written addresses by both parties on August 13.
Justice Ezekiel Ajayi, the chairman of the three-man panel, reserved the judgment after counsels to the petitioner and respondents adopted their final written addresses.
