Skip to main content

Third Parties

The Election Finances Act has recently been amended by the Legislative Assembly of Ontario. The changes were enacted by Bill 2 on December 5, 2016. Please be advised that some material in the current Elections Ontario handbooks and guidelines for chief financial officers is no longer up to date. Elections Ontario will be issuing updated handbooks and guidelines in 2017.


A third party is any person or entity that is not a political party, candidate or constituency association, and that engages in political advertising. Third parties include corporations, partnerships, unincorporated businesses and associations, and many other groups.

Third parties in Ontario must obey the rules as outlined in the Election Finances Act. This section provides information about how to register as a third party and how to follow the filing requirements.

For complete guidelines, see our CFO Handbook for Third Parties.

If there is any discrepancy between the content on this website and the content in the CFO Handbooks for political entities, the handbooks reflect Elections Ontario’s current policies and practices.

For the November 17, 2016 By-elections Niagara West—Glanbrook and Ottawa—Vanier

Updated on: November 10, 2016


Name of Third Party    

Effective Date

of Registration

Name of Applicant(s)

/Principal Officer(s)



Ontario Medical Association November 9, 2016 Tom Magyarody (Principal Officer) Suite 900 -150 Bloor Street West Toronto, Ontario  M5S3C1
                        Total Number of Registered Third Party Advertisers = 1