Harsh on dinosaurs - at least they had the decency to become extinct
I think he's actually doing OK. There's an awful lot of noise around him and his administration, of course, but beneath that he's making real progress on a number of serious policy goals. Net Neutrality, the Paris agreement, Workers' safety and health policy, undocumented immigration, abortion funding, energy policy and so on. Plus a load of foreign affairs matters that any president always has loads of leeway with, as it doesn't rely on the legislative process.
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.