Election branding covers the Zambian capital Lusaka ahead of Thursday's vote. Three days before Zambians head to the polls in what is expected to be a highly contested election, the opposition is keeping its head low. The military was deployed after sporadic violence between supporters of President Edgar Lungu's Patriotic Front (PF) and opposition leader Hakainde Hichilema's United Party for National Development (UPND) in parts of the country. IMAGES AND SOUNDBITES