Pallister says Greg Selinger, Steve Ashton and Theresa Oswald are making new spending promises on the campaign trail and musing about more deficits.
One bond rating agency has already warned the government that its credit rating could be downgraded if it continues to run deficits.
Pallister says a lower credit rating would mean higher interest payments, resulting in less money available for government programs.
The NDP candidates have said there are more important things than balanced books and they've suggested that Pallister's approach would cut front-line services and jobs.
The New Democrats had promised to stop running deficits by 2016, but all three candidates have said that date may be pushed back.