On 13th June, 2012 CCEDU deployed a team of 24 CCEDU members to observe the Kween by-election. The contestants in this race included NRM's Kapchemeiko Paul Machinjach; FDC's Chemsuto Tom; UPC's Labu Alex and Independents Mwanga Jackson and Chelimo Nelson Kaprokuto.

The CCEDU observers indicated that the election was largely peaceful, free and fair. Some of the notable hitches included delay in delivery of voting material at some polling stations and the voter buying in a few areas. NRM's Kapchemeiko Paul Machinjach emerged winner with 11,575 votes beating his closest rival FDC's Chemsuto Tom with 3,323 votes.