The Green Party undoubtedly believes a policy that will mean smaller pay rises for parliamentarians is a surefire winner. How could it be otherwise when the announcement of the MPs' annual increase is always the trigger for widespread murmurs of resentment? On that populist level, the policy may gain traction. On any other level, however, it makes little sense.
The Greens would tie the rise in MPs' salaries to that of the median income in dollar terms. According to the party co-leader, Russel Norman, this meant the increase for the 2012-13 year would have been $780, not the $2800 decreed by the Remuneration Authority.
This link to the movement of incomes of "middle New Zealand" would, he said, be in line with MPs' "duty to be part of the solution to inequality".
Dr Norman suggests the use of the median income would overcome the drawbacks associated with the authority's use of subjective assessments. This had created a situation where "MPs' salaries are linked to the private sector and those earning the most".
On those points, the Greens' policy goes awry. The authority's starting point for MPs is actually the payline for public servants doing jobs with broadly similar complexity and responsibility. Equally, the five criteria used by the authority in setting salaries make more sense and provide considerably more flexibility than a system based rigidly on one indicator.