Only47 % agree that Trudeau should stand up to Trump.That's less than half of Canadians, 
Moreover that number will shrink dramatically when Canadians discern the difficulties that Canada will have by taking on the U.S. Canadians generally are weak kneed and have been conditioned to think that, when it comes to the Americans, they can have their cake and eat it too. But that's precisley what the election of Trump was all about - to stop that kind of thing - and to put Americans first. When  Canada's economy starts to hurt that number will decline. The key is the 28%, who only "somewhat" agree that Trudeau should stand up to Trump. They will be the first to soften their view once the rubber hits the road and they see that Trump intends to keep his election promises and put Americans first. 
There is another piece on the Globe front page this morning that suggests "Canada's economic star is about to dim in 2017". 
A declining economy will affect Canadians support for Trudeau.