nairobi kenya repeat presidential election must hold within 60 days stipulate constitution supreme court nullify result vote hold last month president uhuru kenyatta say thursday kenyatta also accuse court reach decision without scrutinize verify form use tally aug. vote say decision could thrust country judicial chaos kenyan election board say early reschedule election oct. 26 french firm provide technology poll say would ready time oct. 17 previous date set re-run kenyan president say repeat election must hold within set time