The Alberta by-election is almost a foregone conclusion, the Conservatives have won that riding with more than 70% of the vote for quite some time now.  The Liberals "breakthrough" there in 2015 involved them getting into the double-digits on vote share.

The Quebec election though is anyone's game.  Historically this has been a pretty strong Quebec nationalist region.  The Bloc Quebecois dominated this region for many years until.  More recently the Conservatives have come into power, but it has often been a 3-horse race between Conservative, NDP and Bloc.

The Liberals haven't really factored into this riding too much, in 2011 they were a DISTANT 4th with only 2 to 4% of the vote.  However I'm sure they'll be throwing their weight into this race.