The three main party leaders zig-zagged across the country Saturday, capitalizing on one of the few opportunities left to sway undecided voters and encourage supporters to make it out to the polls Monday for what's likely to be a tight race.

Stephen Harper

A Conservative rally in Laval, Que., drew a large and boisterous crowd that would sporadically break out chanting "Harper" and "four more years." At one point, the crowd booed when Harper warned supporters of tax credits that a Liberal government would roll back.

Harper implored his supporters to keep up their "enthusiasm" and "determination" for "just two more days," and spoke of a "new generation of Conservative MPs" from the province.

The Conservatives are looking to gain back the five Quebec seats they lost to the NDP during the 2011 election. They currently hold five seats in the province.

During his final week of campaigning, Harper warned of a real chance that the Liberals could form the government on Oct. 19.

When asked if he's at peace with his campaign -- and the future of the Tories -- Harper replied: "In the past 10 years, I believe our Conservative government has led this country forward during a difficult time to be more prosperous, more united, more proud and more secure than ever before."

At campaign event on Saturday evening in Oakville, Ont., Harper continued to stress that the economy is his "Number 1 priority and he reiterated his promise to keep taxes low and to maintain a balanced budget.

Harper also attacked the Liberal Party's platform for its "out-of-control spending."

"The Liberals think Canadians should pay more taxes: You make it they'll take it, and believe me they'll spend it," Harper said.

Harper took shots at Ontario Premier Kathleen Wynne, who has been an unabashed supporter of Trudeau on the campaign trail.

"(A Trudeau win) will be just like the Liberal government in Ontario: Deficit after deficit, tax hike after tax hike, cut after cut, and friends, we cannot afford to have that at the national government of this country," Harper said.

Harper also appeared at rally in Etobicoke with former Toronto city councillor Doug Ford and former Toronto mayor Rob Ford on Saturday night.

The Conservative leader has treaded carefully around the controversial Ford family during the election campaign, but acknowledged their support during Saturday’s rally.

Justin Trudeau

With the Liberals maintaining their lead ahead of the Conservatives and NDP, according to the latest Nanos poll for CTV News and the Globe and Mail, Trudeau encouraged his supporters in Atlantic Canada to get out to the polls on Monday.

"We have the chance to take Canada from Stephen Harper and give it back to Canadians," Trudeau said during a campaign stop in Saint John, N.B.

"Go knock on doors, make those phone calls, get out there and talk with your neighbours and your family and your friends," Trudeau told supporters. "Do whatever you can to make sure that no vote and no voter gets left behind."

At rally in Thunder Bay on Saturday evening, Trudeau said that the Liberal platform is the "most progressive" and touted its stance on infrastructure, the economy and the environment.

The Liberal Leader is spending the weekend campaigning in ridings held by his opponents. Trudeau is scheduled to attend events in B.C. on Sunday.

Tom Mulcair

Mulcair spent the morning campaigning in British Columbia, where the NDPs are currently polling at higher levels, compared to Ontario.

Speaking at a stop in Burnaby, B.C., Mulcair encouraged supporters to attend an NDP rally. "I want to show Canadians that here in B.C., it's the NDP that is organized to defeat Conservatives and on Monday we're going to get the job done."

Mulcair also warned of Liberal and Conservative corruption.

Speaking in French, Mulcair said it is the "same gang" in the Liberal party who are responsible for the sponsorship scandal and the latest revelations that Dan Gagnier, a member of Trudeau's inner circle, offered lobbying advice on an energy project.

"For 148 years, the same forces, the same commentators, they always said the same thing: 'You have no choice in Canada, you're supposed to alternate between Liberal corruption and Conservative corruption," said Mulcair.

"This time there is hope."

Despite lagging in the polls, Mulcair insisted he is solely focused on booting the Conservatives from government and winning the election.

"We've said since the beginning the number one thing to do is to get rid Stephen Harper's Conservatives and to replace them with an NDP government," said Mulcair.

Mulcair also dodged questions about his future as NDP leader if the party finishes second or third at the polls, saying the campaign is still a “three-way race.”

At a rally in Vancouver Saturday afternoon, Mulcair continued to attack the Liberals, who appear to be the front-runners heading into Monday's election.

He said Trudeau’s “inner circle is already opening the door to lobbyists” from pipeline companies.

Mulcair added that voters "don’t have to go back" to Liberals or Conservatives.

"This time we have a real choice, we don’t have replace Conservative corruption with the gang who brought us the sponsorship scandal and is already at it again before the election is even over," Mulcair said.