Understanding the 'why' of the UK election results has become, in itself, a vast political propaganda battle; as has the 'why' of the political polling failure. It may be wiser to map and then consider the facts on the ground, the extant politico/social realities that the election expressed and the indicators for economic, social, political and diplomatic policies it gave.
Europe is on the back foot now. We have had vivid, grecian demonstrations of the absolute priority of preventing the loss of any member of the European Union - let alone an EU member of the importance of the UK. Unlike the impertinences offered to long-gone UK governments until a sufficiently grovelling Heath was installed, the EU is going to beg to prevent Brexit. It can't accommodate treaty change (or the whole thing will come to bits) so watching with interest the contortions that will circumvent the Treaties and satisfy UK requirements of return of powers to nation states or else might become a national sport.
The electorate is well able to protect its requirement for a decent place to live, a decent wage and a chance for the kids even if its formally available opportunities to do so have been limited to once every five years rather than whenever we get cross enough in less than that time. The London green belt will be turned into a vast Garden City (London Garden City sounds rather well) in the next five years, just as was the Lee Valley under various administrations in the middle of the 20th century.
Having returned only yesterday from Welwyn Hatfield I can think of no better outcome for the scruffy 'agricultural' land ringing London then parks, manufacturing industry, sports facilities, and manicured landscape for public enjoyment, with extensive transport and communications, offering decent housing and excellent schools and local clinics. It may be a 'realised socialist' dream but in truth it was realised by political visions very different from those of Ed Miliband and his ilk.
Economic policy, the proper domain of the state, seems to be in competent and remarkably flexible hands. Economics has been called the dismal science; it has some claim to be called the dead science. We know how economics works; we know how to respond to economic requirements and emergencies. Economic disaster is almost always now political disaster.
Thank Goodness the UK electorate has seized their once-in-five-years' opportunity and rejected the political twerpishness of Ed Miliband.