Recommendation 15 (Polling, Counting and Publication of Results) Kenya 2007
http://aceproject.org/ero-en/regions/africa/KE/kenya-final-report-general-elections-eu-2007/at_download/file
The voter lists for the polling stations should contain a place for the voter to sign or put down a thumb mark as a safeguard against ballot paper stuffing. ECK regulations should stipulate counting the voters’ signatures on the voter lists and reconciling this resulting total with the number of ballot papers in the ballot boxes.