NASA chiefs have expressed disappointment at Jubilee leader's no-show for their scheduled meeting with IEBC officials on Tuesday.
But shortly after they addressed journalists and left, Deputy President William Ruto arrived with leaders including National Assembly majority leader Aden Duale and Elgeyo Marakwet Senator Kipchumba Murkomen.
Presidential candidate Raila Odinga and his team were to meet the officials alongside President Uhuru Kenyatta and his team.
They were expected to air their grievances ahead of the repeat election on October 17.
NASA chief campaigner Musalia Mudavadi addressed the press flanked by Raila, DP candidate Kalonzo Musyoka (Wiper), Moses Wetang'ula (Ford Kenya) and lawyer James Orengo who is Siaya Senator.
Mudavadi noted the commission was not ready for the meeting.
"We arrived at about 11:15am and have been with IEBC. We did not see the presidential candidate from Jubilee. We are of the view that the IEBC was not ready for the meeting," he said.
Mudavadi accused the commission chaired by Wafula Chebukati of giving them a "strange document" and saying nothing about it.
"They have given us a document we are seeing for the first time. If they were just going to give the document, they should have said so," he said.
But the ANC leader noted NASA is ready to lay their cards on the table and have a structured meeting with stakeholders.
"Our view is that a lot more needs to be done," he said after the meeting at IEBC's office at Nairobi's Anniversary Towers.
After the Supreme Court ruling that nullified Uhuru 's victory after the August 8 national election, the Opposition demanded changes saying this is the only way they will take part in the eleciton.
NASA demanded that CEO Ezra Chiloba resign over a "sham election" and warned they will not return to the ballot with him overseeing the process.