Conservative Leader Andrew Scheer did not take part in Friday's, September 27, 2019, massive climate-change marches as Liberal Leader Justin Trudeau waded in deep, accepting the criticism of teenaged climate-change activist Greta Thunberg along the way.

Liberal Leader Justin Trudeau met teenaged Swedish climate activist Greta Thunberg in Montreal on Friday, September 27, 2019, in advance of the cross-country marches that are expected to dominate the federal election campaign.

Liberal Leader Justin Trudeau said on Thursday, September 26, 2019, the political instability in the United States and Britain serves as a warning to Canadian voters to avoid the pull of divisive populism that he accuses his Conservative opponents of fostering.

There will be more than one Canadian election campaign unfolding this week.

Conservative Leader Andrew Scheer pivoted his campaign to the environment on Wednesday, September 25, 2019, announcing a tax credit for homeowners who make energy-saving renovations following a scathing attack a day earlier by his Liberal opponent, Justin Trudeau.

Andrew Scheer and Justin Trudeau fought on Wednesday, September 25, 2019, for the high ground on who was best suited to fight the ravages of climate change, a battle that exposed the wide valley in their approaches.

Long-simmering political differences over climate change boiled over into a series of personal attacks between the Liberal and Conservative leaders on the campaign trail on Tuesday, September 24, 2019.

Ontario leaders — old and current — were pinned in the crossfire of Justin Trudeau and Andrew Scheer's battle on Monday, September 23, 2019, for the vote-rich province that's the gateway to federal victory.

The Liberal Party pledged on Saturday, September 21, 2019, to keep private the details of any conversation between NDP Leader Jagmeet Singh and Justin Trudeau about the blackface scandal that rocked the federal election campaign this past week.

Britain's envoy to Canada says her government wants to avoid a no-deal Brexit departure from the European Union, and its presentation of documents to Brussels on Thursday, September 19, 2019, was a step towards a last-ditch agreement.