Mr Jones tasted corporate life as chairman of the Maori Fisheries Commission before entering politics and clearly still enjoys the company of business leaders. In politics he has put development, particularly for Northland, ahead of all other concerns and made no secret of his distaste for the Greens. His campaign for the party leadership emphasised Labour's need to win at least 40 per cent of the vote at this election so that it would not be too dependent on the Greens. Clearly he sees no prospect of Labour lifting its vote to that level now.
If the election does put Labour in a position to form a government, it will be heavily beholden to the Greens. On paper New Zealand First could be an alternative coalition partner, one that Mr Cunliffe, like Helen Clark, would probably prefer to the Greens, but Mr Jones knows Winston Peters better than most people and obviously does not think Mr Peters would put a second-placed party in power.
All things considered, he would sooner accept Foreign Minister Murray McCully's offer of a roving ambassador's role in the Pacific.
He will keep an eye on economic aid projects in the islands, an interest he has demonstrated on a previous Pacific tour with the minister. It looks like a job created for him, though it does not sound so compelling that it could explain his decision to leave politics.
He is leaving for the reasons he gives: "I don't want to do it anymore ... I'm not able to give to Labour the 100 per cent that I ought to be giving. I want to go and do something else."
It is a body blow for Labour so close to an election. If the party cannot excite one of its own, an MP who could count on being in its Cabinet if it becomes the government, how can it excite the voters on September 20?
Labour has not only lost an effective MP but has also lost one of the few who could reach into the male, blue-collar enclaves Labour used to command. It has lost a dimension.