Trudeau also said a re-elected Liberal government would take steps to address housing speculation by foreign buyers that is driving up housing prices - including what Trudeau called a "modest" 1 per cent national speculation and vacancy tax to be levied on non-resident, non-Canadian homeowners.
The prime minister visited the Governor General, the Queen's representative in Canada, on Wednesday morning to formally launch the campaign.
Opinion polls are indicating it will be a tough race for Trudeau, who is seeking a second term in office.
Election day is set for October 21.
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.
Of the 4,549 respondents, 45 per cent said they have a negative impression of Trudeau and 35 per cent said they have a positive impression of the Liberal leader.
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In the early hours of yesterday morning, Mr Johnson lost his second bid for a snap general election amid angry scenes in the Commons.
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That would leave him and his Liberal Party weakened, relying on opposition members of parliament to push through legislation. This campaign will be a relatively short 40 days, or just over five weeks.
The campaign is expected to focus on issues of affordability, the economy and climate issues.
"I have had a meeting and I have been interviewed by the RCMP, and that meeting happened yesterday [Tuesday], and I am not going to comment any further on the nature of those conversations", she said in the interview Wednesday. The Conservative leader responded to this story, saying Trudeau should have waved the rule in order for the police to investigate. The latest polls show the Liberals claiming a slight lead over the Conservative Party.
Canada's official campaign period has often been fraught with unexpected turns that can lead to unforeseen outcomes.
That's the question for the leaders of the Conservative, NDP and Green parties today as they prepare for the first leaders' debate of the federal election tonight in Toronto.
The separatist Bloc Quebecois, under new leader Yves-Francois Blanchet, will be competing for seats against the Liberals, Conservatives and the NDP in Quebec, a crucial battleground province in federal politics.