27. In so far as provision with respect to any matter is not made by this Act or by His Majesty in Council or, after the constitution of the Federal Legislature, by Act of that Legislature (where the matter is one with respect to which that Legislature is competent to make laws), the Governor-General, exercising his individual judgment, may make rules for carrying into effect the foregoing provisions of this part of this Schedule and for securing the due constitution of the Council of State and the Federal Assembly and, in particular, but without prejudice to the generality of the foregoing words, with respect to—
(i) the notification of vacancies, including casual vacancies and the proceedings to be taken for filling vacancies;
(ii) the nomination of candidates;
(iii) the conduct of elections, including the application to elections of the principle of proportional representation by means of the single transferable vote, and the rules to regulate elections where certain of the seats to be filled are to be filled by persons to be chosen to serve for different terms, or are reserved for members of the scheduled castes;
(iv) the expenses of candidates at elections;
(v) corrupt practices and other offences at or in connection with elections;
(vi) the decision of doubts and disputes arising out of or in connection with the choice of persons to fill seats in the Council of State or the Federal Assembly; and
(vii) the manner in which rules are to be carried into effect.