9. Subject as hereinafter provided, the Rulers of two or more States forming a group to which one seat in either Chamber of the Federal Legislature is allotted shall, in choosing a person to be appointed by them jointly to fill that seat, each have one vote, and in the case of an equality of votes the choice shall be determined by lot or otherwise in such other manner as may be prescribed :
Provided that in choosing a person to be so appointed the Ruler of a State mentioned in sub-paragraph (a) of the preceding paragraph shall be entitled to two votes and the Ruler of the State mentioned in sub-paragraph (b) of that paragraph shall be entitled to three votes.