The effort to brand moderate and sensible policies as far left extremism seems to have taken in an awful lot of people. The link Dave gave a few posts back at 7:11 to a piece from a Norwegian perspective puts it well - here's a quote from it:

Mr Corbyn’s policy-platform, particularly in regard to his domestic policies are largely identical with the Norwegian Labour Party manifesto. Railway nationalisation, partial or full state ownership of key companies or sectors, universal healthcare provisions, state-funded house-building, no tuition fee education, education grants and loans to name but a few, enjoy near universal support among the Norwegian electorate, in fact, they are so mainstream that not even the most right-wing of Norwegian political parties would challenge them.