In light of managing the information that goes to the public, yes, it's very hard to pinpoint the origin of the sources, as obfuscation is omnipresent whatever information is produced from anywhere in the world. It could be from here inside Canada, as well as from other countries across the planet.
I cannot agree with Laurence here on the fact that you can mark the data according to the source of information, as, again, false information can also be justified as being as valid as real information, so the bottom line remains the education and awareness made to the public by various means, just like the cybersecurity centre of Canada put on various programs to educate people, but that has to be put down to a level that is accessible to everyone. It cannot be a thesis of five pages with small characters that let people know what the threat is, how to address it and how to live with it.
It's also not necessarily during election time that the information has to be filtered, because, before an electoral process, people get influenced by all sorts of discussions and matters. Then, when it comes to the election period, they are already preprogrammed, if I can use that term, to cast their votes according to the influence they received throughout the two, three or four years before that election.