The ruling Jubilee party is this Saturday set for its National Delegates Conference at KICC, Nairobi.
At the time of going to the press, delegates had already started streaming in as early as 6 am.
The NDC is expected to be Raila's defining moment since his ODM party is set to have a joint session with Jubilee that will see him endorsed as Azimio La Umoja presidential candidate.
A host of leaders are expected to attend the NDC.
President Uhuru Kenyatta will lead his Jubilee party in the NDC.
According to the designated sitting arrangements at the venue of the function, seats have been reserved for Raila, Wiper leader Kalonzo Musyoka, KANU's Gideon Moi, Narc Kenya Martha Karua and UDP's Cyrus Jirongo.
Governors, MPs, Senators and MCAs among others leaders are expected to attend also.
The OKA's invitation to the meeting comes a day after the Wiper leader announced entry into the Azimio la Umoja.
Kalonzo said they have officially kicked off a structured dialogue that will see them sign grand coalition dubbed Azimio- One Kenya Alliance.
"The One Kenya Alliance wishes to inform Kenyans that it has officially initiated open and structured dialogue with like-minded political formations- namely the Jubilee coalition and the ODM party," Kalonzo said.
The coalition agreement between the parties will be signed on Monday.
