As for Green Party Leader Elizabeth May, the only event listed on her itinerary is the debate, which suggests she may be spending the day either making or recovering from the cross-country trek from Victoria, where she launched her campaign yesterday.
Why has an election been called?
Trudeau, however, defended not attending the first debate.
Also on the watchlist today: The Federation of Canadian Municipalities releases its election recommendations, which, as per the advisory, offers "a call to improve Canadians' quality of life by empowering the local governments closest to their daily challenges".
This is the prime minister's third visit to Kamloops this year.
One of the largest pieces of luggage has been the SNC-Lavalin affair, the controversy surrounding Trudeau's having pressured his former attorney general, Jody Wilson-Raybould, to help the engineering and construction giant avoid a criminal trial over fraud and bribery charges.
Next month's contest is not about foreign policy, where the Canadian consensus for multilateralism prevails, as it has since the age of Lester B. Pearson, who won the Nobel Peace Prize in 1957 and was prime minister from 1963 to 1968. On Wednesday, he promised "a more ambitious climate plan", while Scheer has vowed to roll back a federal carbon levy as his first act in office, if elected.
Trump announces crackdown on flavored e-cigarettes
US public health officials are investigating 450 cases of vaping-related lung illness across 33 states and one USA territory. Azar said it will be several weeks before his department releases its proposal to crack down on flavored e-cigarettes.
After the meeting, Mr Trudeau faced a barrage of questions from journalists about the SNC-Lavalin story. The Trump view that the Chinese leadership consists of liars and cheats generally is not embraced in Canada, though Conservatives are calling for a much tougher line against that rising economic power.
"Canadians have an important choice to make", Trudeau said.
Will Trudeau win the election?
The latest polls on Tuesday, however, gave the Liberals a slight edge. That margin would not be enough to guarantee a majority of seats in the House of Commons.
For Canadian's, energy is a major topic of debate - with the issue of pipeline development a real sticking point.
He accused Andrew Scheer's Conservatives of having no new ideas, of regurgitating the same "failed" policies of Stephen Harper's previous government, which he described as tax breaks for the wealthy and cuts in services for everyone else, leading to a stalled economy.