Boko Haram and other militants have stepped up attacks in the run-up to Nigeria’s election on 14 Feb. On Monday a suicide bomber killed one bystander and injured 18, just minutes after the President left a campaign rally in the north. He addressed the rally after two blasts killed five people the previous day at the same location. Last week the African Union backed plans for a 7,500-strong regional fighting force to be deployed against Boko Haram. However Boko Haram is not the only challenge to Nigeria’s future.  Explosions also ripped through court buildings in three towns in oil-rich southern Nigeria in coordinated attacks. Boko Haram is not known to be active in the oil-producing region, but there are militants there who are living in poverty and demanding a greater share of Nigeria's oil wealth who have carried out attacks in the past For INSIGHTS into key influences on Nigeria’s most momentous election since 1999 click the 'More' button