John Banks will not live down the stain on his reputation left by "anonymous" donations to his last Auckland mayoral campaign. That stain was bad enough when he claimed he could not remember a discussion with the internet magnate Kim Dotcom. It became worse last week when the findings of a police investigation were released.
The police found Mr Banks did personally solicit the two $25,000 donations from Mr Dotcom, subsequently recorded as anonymous in his election return. They also found he had personally received an "anonymous" donation from SkyCity's chief executive that was handed to him in a sealed envelope.
The police are taking no action on these findings because the election return was filed by a campaign volunteer and Mr Banks had sought and received confirmation that it was accurate before signing it. That was all he need do, in the police view, to satisfy the Local Electoral Act.
That was good enough for the Prime Minister, who relies on Mr Banks' vote as the solitary member of the Act Party in Parliament. The former mayor, now MP for Epsom, owes his survival in the Government entirely to MMP. Were he a National MP he would surely have gone the way of ministers who have been suspended for less.
This case demonstrates yet again that the enforcement of electoral law is not a task for the police. It is not fair to draw them into highly charged political events, especially if their decision might force a byelection that would have implications for a government's stability. That consequence is unlikely in this case. National, or a new potential coalition partner, could count on winning Epsom.