To-date, the National Electoral Commission (NEC) has issued Two Million Four Hundred and Twenty five Thousand and Twenty Six (2,425,026) Voter ID Cards out of a total of Two Million Six Hundred and Sixty Three Thousand Seven Hundred and Forty Six (2,663,746) printed cards. The difference of two Hundred and Thirty Eight Thousand Seven hundred and Twenty (238,720) represents:That's impressive!
♦ Unclaimed cards
♦ Cards not yet collected by Diasporas
♦ 794 duplicates currently being investigated by CID
♦ Correction done during Exhibition
The data obtained from the exhibition process are being consolidated and will be matched with the central Biometric Voter Registration data in Brussels, Belgium. Voter ID Cards will subsequently be printed and distributed nationwide during the last week of August 2012.
There's much more, including the cost of the exercise at the link.