However, four of the six aspirants participated in the exercise.
They were Osaro Obazee, Engr. Chris Ogiemwonyi, Dr. Pius Odubu and Pastor Osagie Ize-Iyamu.
Obazee, Ogiemwonyi, Odubu and Iyamu took turns to appear before the panelists between 2pm to 6pm.
The verification was done behind closed doors with reporters barred from attending the screening session.
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Obaseki, who is seeking re-election, showed up on the first day of the screening exercise at the National Secretariat of the party in Abuja, the venue of the verification at about 1:10pm.
He hurriedly left five minutes after with a pledge to return for the exercise.
His supporters on Wednesday waited vainly for his return.
They were decked in a white T-shirt with inscription of his picture and a fez-cap.
It is however expected that Obaseki and Matthew Aigbuhuenze Iduoriyekemwen will face the screening panel on Thursday.
The chair of the committee, Prof. Jonathan Ayuba, told newsmen his committee was not a judicial panel of inquiry but assigned to carry out verification of credentials submitted by all the aspirants.
The panel will end its assignment tomorrow.
AFRICA TODAY NEWS, NEW YORK