They're not an "official party", but they still got 6% of the vote. But, because of FPTP they only got 2% of the seats. Bloc Quebecois got 6.4% of the vote and 6.7% of the seats. There are still a lot of people out there who would want to vote NDP, but who voted Liberal to achieve "anybody but Conservative". The plan worked, but I think they'd like some electoral reform.

https://www.bbc.com/news/articles/cn4jd39g8y1o