1) If Kalenjins beat Kikuyu,Who will ever vote for Ruto?Who?
2) Kalenjin don't have monopoly of violence like in 2002.They don't control police or army.
3) Incase of violence, They'd be alienated which means somebody can start war in rift valley to make Ruto look bad and demonize him to Kikuyu and luo before election.
Uhuru has Ruto by the balls,He can deploy security,switch of mpesa and Internet.Ruto is fucked up.