The Senate in Canada is the gatekeeper to democracy. They forced Trudeau to drop the Emergency Act by indicating the vote would fail in the Senate. The Senate has final write out of clauses in all bills passed by the house. They have indicated a conservative lean. The bill if there is overreach will be adjusted in the Senate if they even pass it. They have the right to delay it as long as is feasible for proper consideration. They also generally don't favour coalition governments historically because they generally form from tyrannical objectives.