Liberal Leader Jean Charest is promising that his party will assume whatever responsibility it has to in an outbreak of legionnaires' disease that has killed eight people.
Charest says his government will look into the outbreak to determine what could have been done differently.
Three new cases have brought to 107 the number of people who have contacted the disease in Quebec City since July.
Health officials have set up a toll-free information line at 1-877-644-4545.
The deadly bacteria grow in the stagnant water of cooling systems, spreading in little droplets through air conditioning.
Authorities have disinfected the systems in more than 100 Quebec City buildings but say more cases could surface in the coming days.
Inspectors are going to return to 30 cooling systems over the next few days to look at the water and to make sure building owners have complied with clean-up directives.
Charest, who is in the midst of a hard-fought battle to be re-elected next week, refused to politicize the debate on Monday and said it is not a "partisan affair."
"We will assume the share of responsibility that is ours," he said during a campaign stop.
"We will look at everything and we will do so rigorously because we're talking about people's health."
His position clashed with that of his health minister, Yves Bolduc, who has accused the Parti Quebecois of failing to implement recommendations from a report in 1997 when the PQ was in power.
The source of the current outbreak is believed to be the cooling systems of two building towers.