Not only was Poilievre highly skilled at applying pressure to the Liberal government, to the point people like Bill Morneau seemed to really hate him, but Poilievre was also one of few real Canadian political stars who could shine a spotlight on Liberal mismanagement and scandals despite the best efforts of the media.
https://thenationaltelegraph.com/national/erin-otoole-demoting-pierre-poilievre-is-another-wound-to-the-conservative-party