What indicators are those that you speak of that point to a one term PM?  They have a massive majority and have not done anything so horrible as to lose this.  Nothing they have done is worse than any other government.  Your obvious hatred of Trudeau doesn't translate to everyone else.  The opposition parties have no candidates to challenge Trudeau at all.  Oleary bailed and Maxime is the best worst hope but could never compete in an election.  Mulcair isn't even wanted by his party although they have few other options.  The only way Trudeau won't make another term is if he dies.  His popularity is just too high.