Forbearance is an unwritten rule. It's about showing self-restraint. All political entities require unwritten rules. Parliaments, countries as a whole, any organization require self-limits on power. One of the things that drives the elimination of forbearance in our mind is polarization. When each side views the other side as deeply threatening, then of course you'll use extreme measures to block the other side. The driver of the erosion of forbearance is polarization.
In the United States, a context that I know better than the Canadian context as the political parties regard each other as existential enemies, they begin to use any means necessary to stop the other side. One sees this in parliaments.
One also sees this in the German parliament. In the face of the radical right in Germany, parliamentary procedures are being used to exclude the radical right from debate. We're in this kind of funny dilemma where the radical right can now point to the mainstream parties and say, “We're not the ones breaking the rules; you are.”
The point I would make is to just highlight the importance of forbearance. In order for our institutions to work, people need to use self-restraint with them, and there's a cost to our institutions of behaving without self-restraint. Alerting people to that cost is not just about winning and losing elections; it's about the viability and the future of sustaining a set of institutions. This requires forbearance. Bringing this up is really a critical point.