Narc-Kenya presidential candidate Martha Karua (left), chats with COTU Secretary General Francis Atwoli as she leaves during the presidential debate in Nairobi, February 20th, 2013. Vice president Kalonzo Musyoka represented Prime Minister Raila Odinga at the debate, who is the presidential candidate for Cord coalition. Presidential candidates Uhuru Kenyatta and Musalia Mudavadi failed to honor their invitation to the debate, organized by the workers body, COTU.