Yes, as Sir John once observed, "Given a weak opposition and an apathetic press, we could debauch a choir of archangels". 

Our system based on the supremacy of parliament gives Canadian PMs far more power to implement their agenda than a system like the US one based on checks and balances in which congress regularly delays, defeats and defangs the president's program.
(For example, in JFK's 3 years in office he was able to pass just 5% of his legislative agenda.)  

Here parliamentary supremacy means if the PM's party controls the majority of MPs, then the PM has near carte blanche to do what he wants and the senate and the opposition in the house can only expose and delay (briefly) the PM's programs.

So we must resists attempts to rig the electoral system, marginalize parliament, muzzle the opposition, and reduce the PM's accountability in the house.

Otherwise we get the 4 year dictatorships recently endorsed and spun by some Ottawa Liberal posters.

Like Turkey with more snow.