Canada's prime minister will officially announce the start of the federal election campaign this week.
"Canadians will head to the polls on October 21", Trudeau told reporters outside Payette's official residence in Ottawa.
Speaking to the media outside of Rideau Hall with a backdrop of Liberal supporters, Trudeau took the first opportunity to frame what the election will be about.
He said Canadians need to decide whether they want to go back to the failed policies of a conservative government that believes in cuts and austerity.
This afternoon, Trudeau is departing for Vancouver, the same city he was in for the 2015 kickoff that resulted in his historic majority victory.
Leader Andrew Scheer will begin Wednesday with a stop in Trois-Rivières, Que., before moving on to the Ontario riding of Vaughan-Woodbridge.
Some critics, including Green Party leader Elizabeth May, said it was inappropriate for the government to launch the election campaign on Wednesday as it marked 18 years since 9/11, when terrorists flew two airplanes into the World Trade Center in NY, murdering almost 3,000 people.
NDP Leader Jagmeet Singh is in London, Ont.to launch his party's campaign, while Green Leader Elizabeth May is joining candidates for an early-morning rally in Victoria, B.C.
The Conservatives, running under the banner of "It's time for you to get ahead", will fight the Liberals fiercely on issues including Mr. Trudeau's ethical compass in wake of the SNC-Lavalin controversy while it will continue to vocalize its opposition to the federal carbon tax.
"If he had nothing to hide, he would wave the privilege and he would let the RCMP do their work", Scheer said.
While the official campaign will last just over five weeks, the political positioning for votes has been underway all summer long.
The forecast is calling for mudslinging, as this federal election is looking like its going to get dirty fast. From new limits on third-party and foreign participation, to new measures aimed at boosting accessibility and voter participation.
At the dissolution of Parliament, the Liberals hold 177 seats, the Conservatives 95, the NDP 39, the Bloc 10 and the Greens 2.
Not since 1935 has a government that won a majority of seats in Parliament in its first term lost power in the next election in Canada.