Never invade Russia in the winter. Never fight a land war in Asia. Never go for a third term as Prime Minister in Canada. It makes the electorate hate you. I don’t complain much about his policies, but Trudeau is screwing his own party over and now we might end up with the Trumpiest of Canadian politicians as PM.
I would say it’s a very noisy signal but not meaningless. Also, one affects the other: the polling affects when there will be an election. Not now!