I'm pretty chilled about the outcome. If the opinion polls had continued to show a landslide, there would be a real danger of complacency. The media have bigged Corbyn up plenty over the past three weeks, and the recent terrorist outrages have sharpened voters' minds about what the dangers of a Corbyn win would really mean.

I believe his campaign bubble was similar to Nick Clegg's in the early stages of the 2010 election, and it will be proved to have burst by tomorrow.