Data useful for election mapping in Kenya.
Shapefiles containing County and Constituency boundaries, and Polling Place locations, can be downloaded from https://github.com/mikelmaron/kenya-election-data/tree/master/output
Use the _sphericalmercator versions with TileMill, will be much faster. Otherwise, you're probably fine with the unprojected versions.
This data comes from http://vote.iebc.or.ke/. There are simple endpoints for requesting json encoded data. download.py iterates, caches, and builds the output.
More info at http://brainoff.com/weblog/2012/12/05/1790