Presidential candidate for the United Party for National Development (UPND) Hakainde Hichilema (C) straightens his tie during a live television debate in Lusaka, January 15, 2015. Zambians go to the polls on January 20, 2015 following the death of President Michael Sata in October 2014. REUTERS/Rogan Ward (ZAMBIA - Tags: POLITICS ELECTIONS MEDIA)