Harper wouldn't even make a fuss about something like that. He'd just bury it in an omnibus bill with little to no debate. In cases where debate was unavoidable, he just used his majority government to play "democracy theatre", where they would sit there for a couple of weeks pretending to listen to, in the case of the "Fair Elections Act" committee for example, 75 witnesses consisting of professors and various other experts in politics and democracy. These witnesses, to a person, explained why the act was an affront against democracy. Afterwards, Harper's committee, having a majority in the committee, simply ignored everything that was said and voted against every single proposal to change the act in any way. Harper then passes it into law and hopes that the Supreme Court of Canada doesn't find it unconstitutional and strike it down (which is really the only way a Harper bill could be stopped).
I watched the whole Fair Elections Act committee proceedings on CPAC, including voting on each of the proposals. At one point just before one of those votes, one of the NDP committee members called the Conservatives out on deliberately curtailing any attempt to alter the Act, with some not nice words aimed at them. When the vote took place immediately after that, one of the Conservatives, when asked for his vote, said, and I quote, "Well, if that's the way you're going to be about this, then I vote no". And that was the point at which I could no longer watch CPAC because it just made me almost physically ill.