<div><b><span style="font-size: 1rem;">The first results are expected later from Nigeria's tightest election since the end of military rule in 1999.</span><br></b></div><div><br></div><div>However, following widespread delays and some attacks on polling stations on Saturday, voting has been postponed until Sunday in parts of the country.</div><div><br></div><div>In other areas, voting continued through the night.</div><div>Turnout appears to be high, especially among young people who make up about a third of the 87 million eligible voters.</div><div><br></div><div>This makes it the biggest democratic exercise in Africa.</div><div><br></div><div>The election has seen an unprecedented challenge to the two-party system that has dominated Nigeria for more than two decades. BBC</div><div><br></div><div>bnbd24/fas</div>