The group is asking party leaders to address the issue and to stop making new promises until clear explanations are given as to how they will pay for their plans.
Lise Denis, the head of AQESS, said the system has had a budget shortfall for each of the past two years.
She said the shortfall will increase three-fold next year and reach $600 million.
Denis said she wants party leaders to explain how they'll handle this.
"It's not possible to cut so much in so short a time," she said.
Since the election campaign began, party leaders have been making health care promises.
Parti Québecois leader Pauline Marois swore to get rid of a $200-a-year health tax she said unfairly targets middle-class families.
On his end, Coalition Avenir Québec leader François Legault promised that every Quebecer will have a family doctor within a year if his party is elected on Sept. 4.
AQESSS wants leaders to explain how these improvements could become a reality in a system that is already spread so thin.
Denis said she's hoping to hear an explanation in their televised debates set to start on Aug. 19.
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