ST. JOHN’S — Business and taxpayer organizations are calling on party leaders in Newfoundland and Labrador to stop making costly election promises, as the province carries the country’s highest per-capita provincial debt. Whoever forms government after the Oct. 14 election will inherit a net debt approaching $20 billion in a province about 545,000 people. That debt will cost more than a billion dollars to service in the current fiscal year. Liberal leader and incumbent premier John Hogan said he’d use money from a tentative energy deal with Quebec to pay down the province’s debt. That’s almost $3 billion short of the net debt forecast this fiscal year — $19.7 billion by the end of March.