The job of Opposition is twofold. First, and most obviously, it is to unsettle the Government through trenchant and telling criticism. Secondly, it must present itself as a competent alternative, with policies that will become compelling when the electorate begins to lose confidence in the incumbent.
Two polls, most recently that of TV3, which had the National Party rising to 51.4 per cent, have suggested that time is yet to arrive.
Nonetheless, John Key was, more than likely, being realistic yesterday when he predicted next year's election would be a "very, very tight race". In that context, there was more than usual interest in David Shearer's pre-election reshuffle of portfolios.
When the Labour Party leader announced his first line-up 14 months ago, he made it clear that strong performers who made inroads into the Government's popularity would be rewarded. It went without saying that those who had failed to land substantial blows could expect to exit the front bench. Mr Shearer has proved as good as his word. This has led to major changes in health, education, housing and jobs, areas of high public interest where ministers are prone to strike trouble and where Labour spokespeople can expect to be in the media spotlight.
Annette King returns to the front bench to take health, after some time in the middle benches following her resignation as deputy leader. Inevitably, this will be seen by some as a step backwards. But the options available to Mr Shearer have always been limited by the shallowness of Labour's 2005 intake. As such, it makes sense to turn to Ms King, a politician of undoubted effectiveness and one who is well prepared to make life far more difficult for Health Minister Tony Ryall.