Jacinda Ardern’s ruling Labour Party said it would raise taxes for top income earners if it is returned to power in New Zealand’s elections next month, as the government looks to pay off debt accumulated due to its Covid-19 pandemic response.Ardern’s Labour Party, comfortably ahead in the election contest according to opinion polls, said it plans a new higher tax rate of 39 per cent for people earning over NZ$180,000 (US$118,908), which would only affect 2 per cent of New Zealanders.“Our plan…