Voters in Mali head to the ballot box this week for a run-off to decide between incumbent head of state Ibrahim Boubacar Keita and his opponent Soumaila Cisse, after July's presidential elections failed to yield a clear victor with violence affecting a fifth of polling stations.

The two squared off in 2013 with Keita, nicknamed by supporters Kankeletegui or ‘man of his word’ in the Bambara vernacular, winning 78% of votes cast after promising to clamp down on Islamist insurgents and rebel Tuareg militia.