The Green Party has been in Parliament for 15 years now and is the only party never to have been part of a government. That is not entirely the Greens' fault. Twice Helen Clark preferred to form partnerships with parties to her right rather than her left, which is strategically understandable. A rival on the same side of the fence is a greater threat.
At this election Labour is at a low ebb and some of its usual supporters appear to be considering a vote for the Greens. In last week's Herald-DigiPoll survey Green support rose above 10 per cent for the first time in nearly a decade. And that was before the party formally launched its campaign yesterday.
The campaign has three weeks to go and much can change. Previous experience suggests the gap between the major parties will narrow and National will not finish with the majority it still has in polls. History suggests it will need the support of at least one other party to govern for a second term. With Act struggling in Epsom and the Maori Party likely to win fewer seats this time, the Greens may be pivotal.
Already, they have indicated one item they would want in a post-election deal and it is one that National would probably grant. Country-of-origin food labelling is not too fearful a demand. It is not particularly wise for a country that exports food to encourage xenophobic sentiment anywhere, but it does not sound like a deal-breaker.
In fact, it says the Greens are open to a deal. They could have nominated more unpalatable policies if they still preferred the safety of the sidelines to a compromise with a political enemy. The party's personnel has been changing at each election. This time it farewells Sue Kedgley and Keith Locke, last of the originals.