I think the Democrats winning is a good thing for Canada, correct me if I'm wrong, but:
-They will damage the US economy, meaning our dollar exchange rate will go up.
-They will enact higher taxes, and anti-business policies, Green/Climate change policies, which means USA will not be much more attractive to businesses like it is now. Businesses will be more likely to choose Canada, or Canadian businesses less likely to leave and go to the US.
-They will remove the tariffs
Now I feel bad for my American brothers of course, but, tbh them declining seems good for us.