In the past year or so, Forum has put the Conservatives much higher than every other pollster. Either something is wrong with their methodology, or something is wrong with every other pollster. So I wouldn't freak out if Forum has cons up 12.
https://en.wikipedia.org/wiki/Opinion_polling_in_the_43rd_Canadian_feder...
Edit: Pretty interesting that Liberals were consistently up 20 points until November 2016, and pretty sharply dropped 10 points within a couple of weeks of the U.S. election.
There were some odd numbers in the Forum poll. Outside of Quebec, nothing changed. But Quebec went from a 24% Liberal lead to a 6% Conservative lead. Do any of the Quebecers here buy that?