• Ruto allies Kipchumba Murkomen, Susan Kihika (Nakuru senator), Moses Kuria (Gatundu South MP) and Alice Wahome (Kandara MP) said they will be in attendance.
• Governor Hassan Joh is expected to spearhead the campaign.
All roads lead to Mombasa for the second BBI forum, with several matatu operators offering free transport to the Mama Ngina Waterfront grounds on Saturday morning.
ODM leader Raila Odinga had on Friday announced a change of venue from Tononoka grounds, citing security concerns.
Several politicians across the country confirmed their attendance at the BBI meeting in Mombasa.
Governor Hassan Joho, one of the key figures in Coast politics, is expected to spearhead the campaign.
Joho and his counterparts Dhado Godana of Tana River, Amason Kingi of Kilifi and Granton Samboja of Taita Taveta county cautioned against any malicious motive during the meeting. Kwale Woman Representative Zuleikha Hassan Juma is among Coast politicians to attend.
Also expected are DP William Ruto allies. They include Elgeyo Marakwet Senator Kipchumba Murkomen, Susan Kihika (Nakuru senator), Moses Kuria (Gatundu South MP), Alice Wahome (Kandara MP), Mohamed Ali (Nyali MP) and Aisha Jumwa (Malindi MP).
They did not attend previous meetings in Kisii and Kakamega.
However, on Tuesday, Murkomen announced they would attend future meetings.
"After consultations as leaders... we will participate and, where necessary, take charge of these public rallies beginning with Mombasa this weekend," he said.
Murkomen said they will support existing efforts and complement the already scheduled rallies.
"We are organising rallies in other parts of the country. We shall soon announce the calendar of complimentary rallies to reinforce those already published," he said.
"That we fully support the BBI report as launched and intend to fully participate in related engagements in good faith."
Ruto has not made it clear whether he will be present or not. When asked if he will attend during an interview on NTV, he said it is not a question of whether he will attend or not.
ODM leaders, including party boss Raila Odinga, Senator James Orengo, MP Junet Mohamed, will be present. Wiper leader Kalonzo Musyoka will also lead his party members to the forum.
In a statement, Kalonzo's spokesperson Onesmus Kilonzo on Thursday said, "Musyoka will be accompanied by several MPs and MCAs, mainly from the Wiper party, who have been drumming up support for the initiative in various parts of the country."
He said Kalonzo did not attend the previous BBI meetings in Kisii and Kakamega due to commitments as Kenya’s Special Envoy to South Sudan. Wiper's move comes after a change of tune by politicians allied to Ruto, who said they will attend the meeting.
Earlier on Friday, a press conference by Jumwa and Ali was disrupted by youths, with the two accusing their political detractors of being behind the act. Ali and Jumwa have insisted that Coast leaders be given the opportunity to lead the discussions. Ali said only local leaders understand the issues affecting their constituents. He wants issues touching on ports, SGR, health and employment, among interests, given priority.