The federal Privacy Act applies to government and the Personal Information Protection and Electronic Documents Act covers the private sector, but political parties do not fall under either law.

Source: https://www.lacombeexpress.com/news/political-parties-need-strong-privacy-rules-independent-oversight-commissioner-says/

Under Canada's Personal Information Protection and Electronic Documents Act (PIPEDA), when a private entity starts collecting information on you, it has to tell you why and how they're using it, Caraway said.

Source: https://www.baytoday.ca/business/what-is-tiktok-doing-with-my-data-and-should-i-ditch-the-app-6625209