The Parti Quebecois is leading in a public opinion poll for the first time in two years, with the support of 41 percent of respondents.

The poll was conducted by Leger Marketing for French-language newspaper Le Devoir.

The Charest Liberals fell behind the PQ with the support of 37 percent of respondents.

The poll found that six out of ten Quebecers are unsatisfied with the government, likely because it continues to reject calls for a public inquiry into allegations of corruption and collusion in the construction industry.

Eighty percent of those surveyed believe that a police investigation is insufficient and that a public inquiry is necessary.

Despite growing dissatisfaction with the Liberals, 29 percent of respondents said they still believe Jean Charest is the best person to lead the province, compared to 26 percent who believe Pauline Marois should be premier.