It was a major setback reminiscent of the nation 's 2007 elections , which the European Union described as filled with rampant vote rigging , violence , theft of ballot boxes and intimidation . Incumbent President Jonathan is the front - runner . His main opponent is former military ruler Sheikh Musa . The election was largely peaceful . Official results will be announced as early as October .
Incumbent President Jonathan is the front - runner . His main opponent is former military ruler Sheikh Musa . The election was largely peaceful . Official results will be announced as early as October .