​​​Section 88.6 of the Municipal Elections Act, 1996 states:

Only the following persons and entities are eligible to file a notice of registration to be a third party advertiser:

• an individual who is normally resident in Ontario
• a corporation that carries on business in Ontario
• a trade union that holds bargaining rights for employees in Ontario

The following persons and entities are not eligible to file a notice of registration:

• a nominated candidate
• a federal political party registered under the Canada Elections Act (Canada) or any federal constituency association or registered candidate at a federal election endorsed by that party
• a provincial political party, constituency association, registered candidate or leadership contestant registered under the Election Finances Act
• the Crown in right of Canada or Ontario, a municipality or local board

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