As you can see most of the world is not back in surplus. They failed to get spending under control and their debt keeps growing. Some of them will never be able to balance their books again unless they print money.
New Zealand didn’t get back into surplus by luck. It was because we had a Government that had good judgement and guts. They managed to keep funding our valued public services, but keeping tight enough fiscal discipline overall to make it back into surplus.
Almost every single time National showed spending restraint, Labour attacked them for it.
Elections are about choices. I choose to trust a party that has shown an ability to make hard decisions for the greater good.