Canadians do not elect parties. We elect Members of Parliament. This is why it is democratic for MPs to cross the floor from one party to another. It has happened over 300 times since Canada became a country.

If an MP is not free to vote in the best interests of their constituents, and rather has to vote along party lines, then the failure of democracy has already occurred. Crossing the floor, in order to act in the best interest of your constituents, is a big move that one doesn't decide on overnight.

We should be more tolerant of individual MPs not always siding with their team, without them having the fear of being removed from their caucus.

Notice how none of the floor crossings happened right after the election. They took time, they saw how government was working, and they took action based on their experience.