A third party advertiser is an individual, corporation or trade union that pays for advertisements or other materials that support, promote or oppose a candidate or issue.
Any eligible individual, corporation or trade union that intends to spend money on advertising must register as a third party advertiser.
You can register as a third party advertiser as of May 1, 2026.
An individual resident of Ontario
A corporation carrying on business in Ontario
A trade union that holds bargaining rights for employees in Ontario
A candidate in the municipal or provincial election
A group, association or business that is not a corporation
A federal or provincial political party
The Crown in right of Canada or Ontario, a municipality or local board
If you’re registering as an individual, you must provide a piece of identification that proves your identity and that you live in Ontario.
There is no restriction against family members or campaign staff of candidates registering to be third party advertisers. However, third party advertising must be done independently of the candidate.
If you are a person with close ties to a candidate, you should consider the following:
If you’re registering on behalf of a corporation, you must provide:
If the corporation has more than one director, provide a resolution from the board authorizing you to act as the corporation’s representative.
Between multiple corporations owned by the same people or person or controlled by a single corporation, only one can register as a third party advertiser.
If you are registering on behalf of a trade union, you must provide:
