(d)if, whether before or after the establishment of the Federation, he has been convicted, or has, in proceedings for questioning, the validity or regularity, of an election, been found to have been guilty, of any offence or corrupt or illegal practice relating to elections which has been declared by Order in Council or by an Act of the Federal Legislature to be an offence or practice entailing disqualification for membership of the Legislature, unless such period has elapsed as may be specified in that behalf by the provisions of that Order or Act;