Pursuant to the cabinet directive, the threshold that is described is that there are incidents, or an incident, that threaten Canada's ability to have a free and fair election. That seems like a very high threshold.
Would you think it would be appropriate, for example, that the public be told when there's interference happening in one riding, perhaps? That might not threaten Canada's ability to have a free and fair election, but it certainly is a major concern, especially if you happen to live in that riding.