The long answer is yes, but not necessarily to the immediate benefit of the main opposition to the Liberals - the Conservatives and New Democrats.
While I find the recent hyper-ventilation over one EKOS poll by the media to be a tad stupid, there is no doubt that following the recent trends in federal polls since May, the Liberals have tumbled down from their formerly high perch - a fact that I will note should have been expected by everyone.
|*-Abacus included don't knows, unlike others|
As I said, this shouldn't come as a surprise to anyone. Justin's honeymoon was bound to end eventually, plus its summer and people aren't exactly worried about politics. The lack of a big increase in support for either the NDP or Conservatives is also noteworthy, as the lost Liberal support was probably a protest vote looking for someone to latch onto. These respondents clearly aren't seeing any alternative in the other two parties either.
My prediction is that by the time September comes, we'll have settled into a three-way race between all the parties. It'll require some major news or event before any party breaks out of that pattern. Which means that once we enter into that trend, it may be a long time until we break out of it.