If John Key wishes to avoid being labelled the Richard Nixon of New Zealand politics, he is going to have to do more than deny knowledge of what was going on in a neighbouring office. The same applies to any attempt to denigrate Hager - as Key did on Tuesday - by describing him as a "screaming left-wing conspiracy theorist". The left-wing bit is correct. But no one has ever produced the evidence to question the veracity of the content of Hager's books.
In short, Hager is credible. It is thus Key's credibility against Hager's.
The outcome of that showdown may not turn the election.
The book, however, potentially has huge ramifications for National's campaign and how the party portrays its figurehead. If Key did not know of the alleged dirty tricks being concocted in close proximity to him, then that raises questions about how loose and lax are the management, discipline and ethics under which the Prime Minister's office functions.
If the Prime Minister did know and did nothing about it, then he is skating on very thin ice.
Debate on this article is now closed.