The provisions of the Standing Orders dealing with the voting procedure expressly provide that, in accordance with the Constitution, the decisions of the Sejm are made by a majority vote (that is, the so-called simple majority vote, i.e. the necessity of more votes in favour than against a particular decision) in the presence of at least half of the statutory number of Deputies, "unless the provisions of statute and the Standing Orders of the Sejm provide otherwise". The voting starts after the debate has been closed but not necessarily immediately afterwards. Such a solution permits a division of the debate from the voting procedure, a practical step but one which may diminish the importance of plenary debates for making decisions. Important issues are settled outside the sittings of the Sejm - either in committees, clubs or the executive organs of assorted parties.

According to the Standing Orders, voting is conducted by open ballot and Deputies vote in person. The rules of procedure do not permit a Deputy to authorise another person to vote on his behalf, to hand over his electronic voting card, or to vote in the name of another Deputy, irrespective of the form and circumstances in which such situations might occur.