I think this is much the same affect. The Liberal's are engaging in just enough corruption to keep anyone from playing a kingmaker. I expect Gould will break for Carney at the convention to pull away woman votes from Freeland.
I also suspect the sudden rise in polling is the boomers having a collective meltdown over Trump. I also suspect that boomers are over represented in polling in Canada. Every single boomer I know is frothing at the mouth over Trump. As well the younger Liberal crowd seems to be feeling some motivation to vote Liberal to spite the orange man. Once the anger cools, the Liberal fortunes will decline again.