There are more times than I thought. In the course of preparing my remarks a very long time ago, I asked the Library of Parliament to prepare a review of all the occasions on which the Standing Orders have been changed without the consensus of the House. They came up with a longer list than I thought. Some of them are fairly small changes, but the major ones, the ones I point to that really stand out are.... Let's see if I can get these right. Andre is here and knows this stuff cold, so he can correct me if I miss anything.
In 1913, the previous question was used as a way of limiting debate to introduce the provision that we call “closure”. The closure provision was used in the 1960s to introduce what we call “time allocation”. It was in1968, I believe. On that occasion, not a single opposition member from either the NDP or the Progressive Conservatives supported the government on the changes. It was used again by the Mulroney government on at least one occasion, by the Chrétien government on, I believe, at least two occasions and, most recently, by the current government in 2023. That would have been with reference to changing the Standing Orders to allow virtual sittings of the House to be added as a permanent change.
I know I've missed a few, but those are the big ones.