Re Trump's getting more of the percentage of vote than the Trudeau government - That is only because Canada is a country with three "primary" political parties. U.S.A has two. 
You say Trump is a convenient target. Trump is the biggest target in the world right now - and it is primarily his very own fault. People in politics become targets. Somehow the self-obsessed Trump wasn't ready for it in any way, shape or form. The man is crashing politically and let's hope for "America's sake" that it happens before the next Congressional elections in 18 months. Or Republicans will be ruined and divided like never before. And Democrats will again push as hard as they can to get as much as they want. Division. Country in crisis - likely for a long time. Political leaders are targets and they should be ready for anything that "can be thrown" at them. Trump is never ready nowadays.