A stunning reversal of fortunes in Canada's historic election

At a rally in London, Ontario, on Friday, the crowd booed as Mark Carney delivered his core campaign line about the existential threat Canada faces from its neighbour.

"President Trump is trying to break us so that America could own us," the Liberal leader warned.

"Never," supporters shouted back. Many waved Canadian flags taped to ice hockey sticks.

Similar levels of passion were also on display at the union hall where Pierre Poilievre greeted enthusiastic supporters in the Toronto area earlier in the week.