First instance body dealing with electoral disputes

Canada Elections Act (published 2000-05-31, lastamended 2012-04-01), http://laws.justice.gc.ca/PDF/E-2.01.pdf

524. (1) Any elector who was eligible to vote in anelectoral district, and any candidate in an electoral district, may, byapplication to a competent court, contest the election in that electoraldistrict on the grounds that

(a) under section 65 the elected candidate was noteligible to be a candidate; or

(b) there were irregularities, fraud or corrupt orillegal practices that affected the result of the election.

[…]

525. (1) The following courts are competent courts forthe purposes of this Part:

(a) a court listed in subsection (2) that has jurisdictionin all or part of the electoral district in question; and

(b) the Federal Court.

(2) For the purposes of paragraph (1)(a), the courtsare

(a) in the Province of Ontario, the Superior Court ofJustice;

(b) in the Province of Quebec, the Superior Court;

(c) in the Provinces of Nova Scotia and BritishColumbia, Yukon and the Northwest Territories, the Supreme Court;

(d) in the Provinces of New Brunswick, Manitoba,Saskatchewan and Alberta, the Court of Queen’s Bench;

(e) in the Provinces of Prince Edward Island andNewfoundland, the Trial Division of the Supreme Court; and

(f) in Nunavut, the Nunavut Court ofJustice.