The way things are trending, and the Ekos numbers where the head (or someone prominent there) feels like he's "polling a different country," I think it's possible the Conservatives retain their majority, just as the UK Tories won (not retained in that case I know) a surprise majority there earlier this year.
I doubt it...even the Ekos numbers would put the CPC a good 20 seats short by my math, and they've plateaued for a week now.
Looks to me like the Conservatives have hit their ceiling and it's just a matter of whether the ABC vote can coalesce around the Liberals.