Members of County Assembly of Siaya on Thursday rejected the proposed constitutional amendments under Punguza Mizigo initiative.
The latest development comes just barely 24 hours after reports emerged that Nyeri County Assembly had floored down the same bill.
Kirinyaga Governor Ann Waiguru took on her Facebook to laud Nyeri MCAs, adding that Mt Kenya region will only support recommendations by BBI team.
"I've said before , Mt. Kenya is fully in support of BBI as evidenced today in Nyeri County where the bill presented by Ekuru Aukot has been rejected by the whole assembly," she wrote.
"Nyeri County, has set the precedence, other counties are most likely to follow. These are signs of the times ahead," she added.
In a tweet on Wednesday, Aukot, a former presidential aspirant, shared a video that was taken during his presentation at the County Assembly and said the MCAs had not yet voted on the bill.
"#PunguzaMizigoBill2019 debate is on. Nyeri county Assembly is yet to vote as confirmed by the speaker @JohnKaguchia in this video after our presentation. Listen in," said Aukot in the tweet.
But on Thursday in Siaya, Dr Ekuru Aukot and the team suffered a major blow when the MCAs rejected the bill. They said the proposed law is likely to erode constitutional gains achieved since 2010.
Siaya is a stronghold to ODM leader Raila Odinga, who has been pushing for BBI referendum. The BBI team is yet to table recommendations.