Mandago was basically hated by everyone except nandis (30% of Uasin Gishu) - Keiyo,Marakwet, Luo, Luhya and Gikuyus were all agreed that Mandago had ran tribalistic regime. But he still won. He combined everything - threats, deals, alliances, party(jubilee) - the whole shebang - and turned a situation where he was certain to lose to a certain win.
Which Keter was sacrificed - Alfred Keter won with a landslide in Nandi. WSR will need to make "peace" with Mandagos/Keters/IsaacRutos because they'll be guys doing heavy lifting while he'll be smiling and look good before cameras.
Mandago issued a clear threat to make Uasin Gishu burn. It was not in the interest of Uthamaki for Mandago to join NASA. They reversed whatever they had programmed. Keter was sacrificed.