▁were ▁aged ▁between ▁ 1 8 – 4 0 , ▁with ▁the ▁remaining ▁ 3 1 . 2 % ▁being ▁those ▁over ▁ 4 0 . ▁ ▁Camp aign ▁ ▁President ▁K ib aki ▁began ▁his ▁president ial ▁campaign ▁on ▁ 3 0 ▁September ▁at ▁Ny ay o ▁Stadium ▁in ▁N airo bi . ▁Od ing a ▁launched ▁his ▁campaign ▁in ▁U h uru ▁Park ▁on ▁ 6 ▁October ▁ 2 0 0 7 . ▁On ▁the ▁same ▁day , ▁three ▁O DM ▁supp or ters ▁were ▁shot ▁( one ▁of ▁them ▁fat ally ), ▁alleg edly ▁by ▁body gu ards ▁of ▁Stanley ▁Liv ondo , ▁who ▁was ▁running ▁as ▁the ▁P NU ▁candidate ▁for ▁Od ing a ' s ▁seat ▁in ▁the ▁National ▁Assembly . ▁Liv ondo ▁was ▁arrested , ▁along ▁with ▁two ▁of ▁his ▁body gu ards ▁and ▁later ▁released . ▁P ius ▁Mu ir u , ▁a ▁bishop ▁and ▁the ▁leader ▁of ▁Ken ya ▁People ' s ▁Party ▁( K PP ), ▁officially ▁launched ▁his ▁bid ▁for ▁the ▁presiden cy ▁on ▁ 2 1 ▁October ▁ 2 0 0 7 ▁at ▁Kam uk un ji ▁grounds . ▁ ▁Two ▁cabinet ▁minister s , ▁first ▁Health ▁Minister ▁Char ity ▁Ng il u ▁and ▁then ▁Regional ▁Co - operation ▁Minister ▁John ▁Ko ech , ▁back ed ▁Od ing a ▁in ▁October ; ▁K ib aki ▁dismiss ed ▁Ng il u ▁from ▁the ▁cabinet . ▁ ▁National ▁Assembly ▁A ▁record ▁ 2 , 5 4 8 ▁candidates ▁cont ested ▁the ▁National ▁Assembly ▁elections