During the proceedings in Parliament, NZ First leader Winston Peters told the Speaker, David Carter, he was setting a disturbing precedent by allowing ministers to refuse to answer questions by claiming actions were not performed in their capacity as a minister. He is right. No amount of glibness by the Prime Minister - "when I ring my darling wife and when I put the cat out at night, I do that in my capacity as a husband, not as Prime Minister" - can disguise that. Nor can his claim that he is merely mimicking the behaviour of his predecessor, Helen Clark, who talked of prime ministers wearing many "different hats".
The simple fact is that most people assume the Prime Minister is fulfilling just that role. If they took a telephone call from Mr Key, they would not think to ask whether he was speaking as the Prime Minister or as the leader of the National Party. The obvious exceptions to this preoccupation are his involvement in party conferences or election campaigns. Then, quite clearly, he is a party leader.
As much should have informed Mr Carter's examination of the transcripts of the question-time exchange. This makes the outcome of the Speaker's quick inquest and his effective sanctioning of the Prime Minister's behaviour all the more unsatisfactory.
Mr Carter said yesterday that Mr Key's non-informative responses were correct for nearly all Dr Norman's questions. The only exception involved one dealing with the Pike River tragedy, in which a clear connection was made with ministerial responsibility.
In large part, Mr Carter has invited the Prime Minister and his ministers to don their hat of choice at any time as a means of evading awkward questions.
It is hardly a recipe for integrity or the engendering of a greater degree of public respect for the nation's politicians.
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