Vice-President Yemi Osinbajo on Thursday held separate private meetings with Mohammadu Abubakar, governor of Bauchi state and Jibrila Bindow of Adamawa.
The Independent National Electoral Commission (INEC) had declared the March 9 governorship election in both states inconclusive.
Both governors declined to speak with state house correspondents after the meeting.
INEC has fixed March 23 for supplementary elections in in Adamawa, Bauchi, Benue, Kano, Plateau and Sokoto states where governorship elections were declared inconclusive.
Apart from Plateau, the Peoples Democratic Party (PDP) was leading in the results of the elections so far declared by INEC in those states.