By Jonathan Head BBC News, Bangkok
They have seen it knocked off its pedestal as one of Asia's most promising democracies, and revealed deep divisions between those who aligned themselves with populist Prime Minister Thaksin Shinawatra, and those who distrusted his seemingly boundless ambition to reshape Thai politics.
So has anything changed, or been resolved?
Others appear to be mere nominees of politicians who either cannot hold office or prefer to stay in the background.
They brought in a new constitution which weakens the power of elected prime ministers.
And in their last weeks in office they passed a law limiting the prime minister's influence over military promotions - an influence Mr Thaksin had used to get his own people in key army posts.
All these measures, they hope, will prevent any future elected government from concentrating power in its hands to the degree Mr Thaksin did.
There is little doubt Mr Thaksin still harbours an ambition to run Thailand again, despite his frequent claims that he has given up on politics.
He still has huge sums of money he can call on, although around two billion dollars remain frozen by the courts here - unfreezing it will be one of his first priorities.
Getting the five-year ban on himself and his colleagues lifted is another priority.
He could also use the majority his coalition now has in parliament to push for amendments to the constitution.
He might even push for some kind of retribution against those behind the coup.
They in turn can keep the pressure up on him through the courts, where Mr Thaksin still faces charges of corruption, and by trying to peel members of the coalition away from the PPP. It seems very unlikely that they would try another coup.
Royal influence
The new Prime Minister, Samak Sundaravej, is a possible wild card. Although was appointed by Mr Thaksin to head the PPP, he is an ambitious and independent politician, with strong ties to the military and the monarchy.
He could well defy Mr Thaksin's authority and try to plough his own path on some issues.
So who is it that Mr Thaksin and his loyalists are up against? It is an informal network of top military officers, business figures and bureaucrats who align themselves closely with Thailand's monarchy.
They see Mr Thaksin, a self-made billionaire, as a threat to the established hierarchy in Thailand which is loosely based on proximity to the monarchy.
His most powerful opponent is Prem Tinsulanonda, a former prime minister and army commander who is now the king's most trusted adviser.
Because of tight restrictions on what you can say about the monarchy in Thailand, there is no open debate over this contest, but it amounts to an almost existential struggle over who rules the country in the future.
Yet it has enjoyed peace and economic growth for most of the past 50 years.
When that moment comes, the rules determining the distribution of wealth and power could change dramatically.