Defections: Nigerian political parties don't have ideology, movement to other parties is not surprising or new, says Senator Kawu Sumaila of Kano. #CTVTweets #PoliticsToday | Channels Television

Africa’s most populous nation is preparing to head to the polls in what is tipped to be one of the most hotly contested elections in a generation. But what does it take to win? The BBC’s Yemisi Adegoke highlights some of the factors that play a key role in getting a candidate elected. Credits Reporter: Yemisi Adegoke Producers: Yemisi Adegoke, Victor Ezeama, Chioma Nkemdilim Animation: Mayowa Alabi Filming, editing and motion graphics: Ifiok Ettang | BBC News Africa