Principles on which Speaker gives casting vote
20.90The occasions on which a Speaker is required to give a casting vote are rare, and in seeking to deduce principles upon which a vote is given, the precedents of the last three centuries are relevant. Although the decisions of successive Speakers have not invariably been consistent, three principles have emerged:
- that the Speaker should always vote for further discussion, where this is possible, eg Mr Speaker Addington's decision of 1796;1
- that, where no further discussion is possible, decisions should not be taken except by a majority, eg Mr Speaker Denison's decisions of 1861 and 1867;2 and
- that a casting vote on an amendment to a bill should leave the bill in its existing form.