I think the incompetence goes to the agency that issues IDs.. I bet you there is no coordination and so numbers are just given.
Yes, the numbers are just given, but on what basis? Even without coordination and with localized manual systems---all of which are already hard to explain in "The IT Powerhouse of Africa"---it is not difficult to devise a system that would have a much, much, much lower probability of duplication than appears to be the case here. Here is one:
- The ID number will consists of the digits that make up the date of birth, the digits that make up the individual's height (in centimetres), the time (24-hr digits) at which the application is finalized, and an identifying number of the place of issue.
Beyond the elections, the apparent inability of GoK to uniquely distinguish those of its citizens that are "in the system" has all sort of implications. What do these duplicates mean terms of tax collection, entitlements to government services, ..., any sort of legal-anything in which one must produce an ID?
....
But that's assuming that the problem really is incredibly, amazing incompetence. The other possibility is that what we have here is deliberate mischief.