Liberal Party officials in NSW are bracing for significant swings in crucial marginal electorates on Saturday, a result which would mean the Coalition is out of government in every mainland state in the country and Labor’s untested leader Chris Minns takes the helm of the nation’s biggest state.

Internal polling circulated to senior Liberal figures suggested there could be swings against the party of up to 8 per cent in the state’s most marginal seats. After 12 years in which it has spent more on infrastructure than any state government before it, if the polling is accurate it would very likely prove decisive for a government that holds only 45 of 93 electorates.