The supreme court has upheld the elections of Simon Lalong, governor of Plateau state, and Bala Mohammed, his Bauchi counterpart.
In Plateau, the Independent National Electoral Commission (INEC) had declared Lalong, who contested the March election under the All Progressives Congress (APC), winner, but Jeremiah Useni, his Peoples Democratic Party (PDP) rival, had challenged his victory.
Useni had earlier lost at the tribunal and court of appeal.
Mohammaed Abubakar of the APC had also challenged the victory of Mohammed who contested under the platform of the PDP.
Like Useni, Abubakar lost at the tribunal and appeal court but headed to the supreme court.
At the apex court on Monday, Sylvester Ngwuta, the judge who headed the seven-man panel, dismissed the appeal filed by Useni and Abubakar.