nairobi kenya opposition say sunday postpone plan swear leader raila odinga alternative president ease political tensions open window possible talk government president uhuru kenyatta opposition coalition nasa plan publicly inaugurate odinga rally tuesday kenyan independence day attorney general say week would act treason kenyatta re-elected kenya president 98 percent vote repeat election hold oct. 26 odinga boycott beat odinga original poll hold august nullify supreme court procedural ground follow opposition allegations vote-rigging malpractices nasa say statement would postpone swearing-in consultations engagement wide range national international interlocutors specifically name mediators involve talk coalition say would announce new date swear ceremony launch people assembly well vigorous prolong resistance plan install odinga alternative president threaten exacerbate rifts open acrimonious election season leave 70 people dead political violence unite state also urge opposition leaders work within law avoid action like propose inauguration ceremony kenya 's opposition say postpone 'swearing-in alternative president