COMMENT:

We can read several things into Jacinda Ardern's so-called minor Cabinet reshuffle.

The first is that this was not a minor reshuffle. There were changes affecting seven ministers.

The second is that for all her kindness, the Prime Minister can be ruthless.

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What happened to Phil Twyford was nothing short of a political humiliation for the frontbench minister and No 5-ranked minister.

But he was responsible for the running wound in the Government's flagship housing policy, Kiwibuild, which was exacerbated by the constant prodding of National's Judith Collins.

Collins can now claim her third political scalp: Lianne Dalziel from