Poilievre losing his own seat capped off a devastating night for Canada's conservatives as they were decisively beaten in the election.

Canada's main opposition leader Pierre Poilievre lost his seat in Monday's general election, results from Elections Canada showed, as the Conservatives were beaten by the incumbent Liberal Party.

Conservative Party leader Pierre Poilievre lost his seat in the Canadian parliament, yielding to Liberal Party candidate Bruce Fanjoy in his Ottawa constituency, according to preliminary results announced on Tuesday.