Article III, § 13

A majority of the number of members to which each house is entitled shall constitute a quorum of such house for the conduct of ordinary business, of which quorum a majority vote shall suffice; but the final passage of a bill in each house shall require the vote of a majority of all the members to which such house is entitled, taken by ayes and noes and entered upon its journal. A smaller number than a quorum may adjourn from day to day and may compel the attendance of absent members in such manner and under such penalties as each house may provide.