There’s a difference between (1) eligibility to vote, (2) registration to vote, and (3) Voting. The EC must know or be made to know which of the three things falls within its mandate.
To be eligible to register to vote, a person must not be any of these three things. (a) She must not be a non-Ghanaian; (b) she must not be below 18 years; and, (c) she must not be of unsound mind.
The certification of each of these three particulars falls within the mandate of some particular State agencies. The EC is not one of such State agencies.
To vote, however, one must first be registered. This is where the EC comes in. The job of the EC (which it has always done) is to rely on the certification of such mandated State agencies to compile the voters register.
The EC has no power whatsoever to REJECT a certificate from a mandated State agency in respect of any of the three particulars. This is the golden line which runs through the Supreme Court’s previous decisions on the matter.