I won't answer a hypothetical question, but with that said, mathematically, had they kept it, the government would have needed to potentially make different decisions within the budget. This is because, as we see within the government's own forecast, looking out over the next 10 years, the debt-to-GDP ratio is increasing. Over a 30-year horizon, it's effectively flat.
The previous government and previous governments before that had a declining debt-to-GDP ratio over a five-year horizon. Had the government decided that it wanted to maintain that fiscal anchor, potentially different decisions would have needed to be taken as part of the budget.