Ottawa, May 1 -- In an unusual move, the leader of Canada's main opposition party was ejected from the House of Commons after he called Prime Minister Justin Trudeau "a wacko", the latest clash between two men set to fight an election next year. The official opposition right-of-center Conservatives are well ahead in the polls and leader Pierre Poilievre regularly attacks the Liberal government for a carbon tax he says is spiking inflation.

"When will we put an end to this wacko policy by this wacko prime minister?" he asked Trudeau in the House of Commons elected lower chamber. Speaker Greg Fergus, a Liberal, told Poilievre the comment was both unparliamentary and unacceptable and asked him four times to withdraw it. Poilievre declined o...