Tribalism in Kenya dates back to the colonial era. From 1920 to 1963, Kenya was under the rule of the British who used the divide and rule method of governing. For years they played one side off against another, in particular the Kikuyus and Luos whom they considered a threat owing to their big numbers. [...]
President Jomo Kenyatta (father of incumbent president Uhuru Kenyatta) was accused of sidelining the Luos, in particular Jaramongi Odinga( father of current opposition leader Raila Odinga) in favor of Moi who who succeeded him in 1978 as the second president of Kenya. During his period in office until 2002, Moi was accused of perpetuating the politics of divide and rule. His presidency was also marked by tribal animosities. The major outbreak was in 1992 with the Molo clashes in the Rift valley region which left 5,000 people dead and another 75,000 displaced.The conflict was primarily between Kalenjin and Kikuyu communities with land ownership cited as one of the key reasons for the conflict. [...]
Major parties were already divided along tribal lines. For example, the Forum for the Restoration of Democracy (FORD-Kenya) was associated with the Luhya tribe, the Democratic Party with the Kikuyu, the Labour Democratic party with the Luo, while the Kalenjin tribe supported KANU. Today, voting in Kenya whether parliamentary, civic or presidential, is done almost entirely along tribal lines.