Nigeria's two main presidential candidates have signed an agreement to prevent violence in tomorrow's highly contested elections. President Goodluck Jonathan and his main contender .Muhammadu Buhari have promised to respect the outcome of a credible poll and urged supporters not to resort to violence. This after,800 people were killed following the 2011 contest between the two rivals. We earlier spoke to the Director General of Nigeria's Independent Electoral Commission Abubaker Momoh about the country's state of readiness for thNigeria's two main presidential candidates have signed an agreement to prevent violence in tomorrow's highly contested elections. President Goodluck Jonathan and his main contender .Muhammadu Buhari have promised to respect the outcome of a credible poll and urged supporters not to resort to violence. This after,800 people were killed following the 2011 contest between the two rivals. We earlier spoke to the Director General of Nigeria's Independent Electoral Commission Abubaker Momoh about the country's state of readiness for the polls.