Canadian Prime Minister Justin Trudeau, facing the loss of his parliamentary majority in this week's election, traded attacks with his main rival Saturday as a bad-tempered campaign entered its final days.

Trudeau came to power in 2015 promising "sunny ways" and a new way of doing politics but saw his popularity drop earlier this year amid an ethics scandal. Images of him in blackface emerged last month, further hurting his Liberal Party ahead of Monday's election.

The 47-year-old prime minister, his voice increasingly hoarse, said Conservative Party leader Andrew Scheer would slash spending and rip up Liberal plans to fight climate change.