That was the Harper strategy and I suspect it will be Pierre Poilievre's, too. And I suspect that Post Media and Sun Media will both watch, happily, even cheer him on. gleefully, from the sidelines because Mr. Poilievre is attacking their competitors.
Will the strategy work?
It didn't for Prime Minister harper - the "old," mainstream media - CBC, the Toronto Star, CTV, even the normal pro-Conservative Globe and Mail, etc - remained hostile and the Conservatives wee unable to reach past them and speak, directly, to local audiences. Even independent outlets like CHCH/Channel Zero would not give the Conservatives a direct, local "voice" because they didn't want to be seen as openly partisan.
Can it work now?
Maybe. As others have pointed out, we, Canadians, are becoming more and More and MORE divided on socio-political as opposed to economic grounds. There are, now, more ways to "speak" directly to Canadians than there were even a decade ago.