KPMG did similar exercises in 2013 and 2017
2017 - the figures were about half of what they have identified now.
Kasimu noted that 17,523 records in the voters list were backed up by invalid passport references, the law requiring that the travel document must be valid at the time of voting for it to be admissible.
Some 171,476 records in the register were found to be invalid when identification numbers were crosschecked with the National Registration Bureau.
Another 264,242 listed voters were found to be with duplicate, missing or invalid registration documents (National Identity Cards of Passports).
Another 2,610 individuals registered using the identity cards and passports at the same time.
Of the 19,647,835 voters registered by the commission as at the end of the second Mass Voter Registration, 1,037,260 are feared to be dead.