Premier Dominic Perrottet distanced himself from Prime Minister Scott Morrison on the last day of campaigning ahead of the super Saturday of four byelections in NSW, warning voters wanted politicians to focus on cost of living issues and not scuttled anti-discrimination laws.

Voters will replace former Liberal premier Gladys Berejiklian, former Nationals leader John Barilaro, former Liberal transport minister Andrew Constance and Labor’s Jodi McKay on Saturday, as Mr Perrottet faces his first test with voters since becoming premier.