New Zealand Herald political editor Audrey Young runs the ruler over Jacinda Ardern's coalition Cabinet. Who is performing - and who must do better?

Jacinda Ardern and one of her most junior ministers have scored highest in the Herald mid-term report on the performance of Government ministers.

And three high-profile ministers with big portfolios have scored lowest.

There were low expectations of Ardern when she started out. It was a big gamble for New Zealand First to choose Labour and install Ardern as Prime Minister in October 2017 because she was virtually untested as a political leader, let alone shown