Ahead of Saturday's election in Nigeria, three opinion polls show different candidates winning the vote, which could mean a tight enough race to force a run-off. VOA reporter Peter Clottey, who is covering the election from Abuja, tells Africa 54 host Esther Githui-Ewart that based on the polls, this could be the first Nigerian election in which a presidential candidate who is not from the main parties stands a chance of winning.