Federal Liberal Leader Stéphane Dion says if Prime Minister Stephen Harper had a "minimum of decency," he would pull the Conservative attack ads running in Quebec during the provincial election campaign.

Speaking at an event north of Toronto on Saturday, Dion predicted the new French-language ads would do little to harm the reputation of the Liberals.

The ads would have little effect on voters in the province, he said; however, they may serve to confuse them during an election campaign at the provincial level.

"Mr. Harper is sending on the TVs in Quebec very negative ads about me, and making people mixed up," Dion told reporters in Richmond Hill, Ont.

"The same people that are voting federally Liberal, they vote provincially Liberal … and that's what will happen and will work to see the Liberal party winning."

The ads, launched last week, take aim at Dion's environmental record, and also focus on the sponsorship scandal and the so-called fiscal imbalance.

Dion also offered his support for Premier Jean Charest and said a win by the Quebec Liberals will be good for his party.

Charest has recalled the National Assembly to table his budget on Tuesday and is expected to drop the provincial writ the following day. Observers say Quebecers are likely to go to the polls on March 26.