There is guidance from the CRTC regarding elections.
We have some training here: http://members.ncra.ca/?
Also some conversation here: http://members.ncra.ca/?
The CRTC election guidelines are here: https://crtc.gc.ca/eng/
"It is the broadcaster’s duty to ensure that the public has adequate knowledge of the issues surrounding an election and the position of the parties and candidates. The broadcaster does not enjoy the position of a benevolent censor who is able to give the public only what it “should” know. Nor is it the broadcaster’s role to decide in advance which candidates are “worthy” of broadcast time.
From this right on the part of the public to have adequate knowledge to fulfil its obligations as an informed electorate, flows the obligation on the part of the broadcaster to provide equitable - fair and just - treatment of issues, candidates and parties. It should be noted that “equitable” does not necessarily mean “equal,” but, generally, all candidates and parties are entitled to some coverage that will give them the opportunity to expose their ideas to the public.
The question of equitable treatment applies to parties and to candidates; to programs, advertisements and announcements; to federal, provincial and municipal elections, as well as to referenda. Equity also applies to the duration of broadcasts, to scheduling, to potential audience, to the choice of which electoral districts and offices to cover, to language of broadcast, to issue coverage and approach, to conditions under which an appearance may be made, and-in the case of paid-time programming-to price.
The Commission acknowledges that each licensee’s situation is unique. The Commission has no firm rules to cover all aspects of election campaign broadcasting; to some extent it will have to deal with situations on a case-by-case basis."