In response to an FT article by Lisa Pollack on 29th March 2016, entitled 'How Reddit has boosted Bernie Sanders' US campaign'
http://www.ft.com/cms/s/2/2ca82066-f4eb-11e5-803c-d27c7117d132.html#ixzz44OPKhbQY
'‘If she does win the nomination, she will have to convert Mr. Sanders’ supporters to her cause, some of whom use “Bernie or Bust” as a rallying cry’
I think the rallying cry is more than just a good sound bite. I suspect many of these folks are voting for Bernie Sanders, and against the establishment, rather than for the Democrats. I can well believe that many will not for Hillary Clinton in the general election if she gets the nomination, since she represents what they dislike - people who eat from the Wall Street trough and then claim to represent 'ordinary' people.
The nature of the political 'game' is changing, something that establishment politicians and the mainstream media are very slow at picking up. Many young people - people not inured to the corrupt nature of politics, take one look at Hillary Clinton's track record, another at her campaign finances, and then decide, intelligently in my view, to take her compassionate ‘spiel’ with a large pinch of salt.
By contrast, many of the establishment journalists and mainstream talking heads have been listening to 'reptiles' for so long that they've forgotten how to recognise a snake.