I can't help suspecting if a Labour Government had just won a fourth election it would not have taken two weeks for someone to write about it. Historians and political scholars would have been extolling the achievement of the party and its leader ever since election night.
They would have pointed out that those previous four-term governments were all pre-MMP, in a two-party system that made it was easier for one party to win 44-47 per cent of the vote, which this Government has done through four elections.
It has been easily our most popular government under MMP. National was elected with 44.9 per cent in 2008, increased its vote to 47.3 at the 2011 election, stayed on 47 per cent in 2014 and held up on election night this time with 46.03. If it drops a percentage point or two today it will still be well above Helen Clark's Government that came in with 38.7 per cent and its best result was 41.2 in 2002. The Bolger Government received just 33.8 per cent at the first MMP election.
Since that tumultuous first term of MMP, the system has worked tolerably well. We have had two nine-year governments, 18 years of remarkable contentment compared to the upheaval of the previous 25 years.
The reason is mainly economic. The last quarter of the 20th century brought the end of a colonial economy and the painful adjustment to world markets. This century has enjoyed the fruits, competitive primary exports, cheaper imports, low inflation, steady growth and a rising population, all underpinned by sound government finances. But MMP has played its part.
No electoral system is perfect, none is more important than the political culture of the electorate whose votes the system has to turn into an acceptable government. MMP in New Zealand was grafted on to a Westminster two-party system that had produced well disciplined decisive governments - too decisive for the liking of many in the later stages of economic reform before the fruits appeared. That's why we adopted MMP.
But is has been interesting to see how much of the Westminster system voters have chosen to preserve. The vast majority, 80 per cent, still vote for one of two long established parties. Neither of them ever receives a majority of the total vote, just as before. No party has won 50 per cent of the vote in my lifetime. But after every MMP election - seven before this one - the winning party has become the government.
They have done so with the support of small parties and single MPs who have supported whichever party won. The smaller players have responded to their sense of what our political culture expects.
The Westminster elements survive not just in the primacy of the party winning the most votes but in the kind of government that has evolved over the 21 years of MMP. Parties quickly found formal coalitions with both parties in a Cabinet did not work here. By 2005, when Labour was returned with a two percentage point margin over National, we had reverted to single party government with supporting parties outside the cabinet, flying a few flags of their own.
Winston Peters complained this week that whatever he does he can not win. He's right, you can not win with 7.5 per cent. But you can look dispassionately at history and see what succeeds here.