Justin Trudeau quickly responded to a heckler who called his wife a wh**e, during a campaign trail interview.

The Canadian prime minister was getting prepared for a media appearance when a man started throwing abuse at him, and while he initially ignored the man, Mr Trudeau hit straight back when he made the sexist comment about his wife.

The man-made threats: “Come on, I’m right here. F***. You f***ing chicken s**t.” The man continued: “Where’s your wife? I’ve heard she’s a wh**e.”

“Isn't there a hospital you should be going to bother right now?” Mr Trudeau snapped back outside the Global News network in Burnaby, British Columbia.

Sophie Grégoire Trudeau has been on parts of Mr Trudeau's campaign trail, ahead of Canada’s 20 September election.

Prime minster Trudeau has recently plunged in the polls, and is currently neck and neck with Conservative candidate Erin O'Toole.

Anti-vax protesters and coronavirus deniers have turned up at many of the prime minister's campaign stops. The country has been divided over the prime minister's hard-line on vaccinations. His mandatory vaccination policies require public servants, transport workers and travellers to get a Covid shot.

“We're unequivocal that civil servants must be vaccinated. If anyone doesn't have a legitimate medical reason for not getting fully vaccinated – or chooses to not get vaccinated – there will be consequences,” Mr Trudeau said at his stop in Markham, Ontario.

Mr O'Toole has said if elected he would only require workers to pass a rapid test before going into work.