Fixed-term Parliaments Bill

In the situation where you have a proper constitutional arrangement, whereby we protect the constitution here, if you took the view that we were not going to support such a resolution, that is the way that our constitution works. We have been good as a House in determining when we defer to the other place. We do not defer only when we think a real constitutional principle is in issue; if we did not defer to the other place on an issue like that, we would be assuming—I would be assuming—that an important constitutional principle was at stake. What is wrong with that? What is our purpose if a part of it is not to defend important constitutional principles?