The Luo heartland is in the western Nyanza region, but they have a significant presence in the key urban centres.

BBC: Kenya cracks down on hate speech ahead of poll

Kenya's 4m or so Luos, most of them in Nyanza, voted overwhelmingly for Mr Odinga in the disputed election on December 27th.

ECONOMIST: Kenya

The use of treated bednets in Kenya's Nyanza province (the region of which Sauri is part) also increased, albeit over a longer period.

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