It would have been obvious to the 50 million viewers that Trump’s torrent of lies and half truths easily overwhelmed Joe’s very feeble performance. The Democrats are now talking about replacing him but it’s probably a bit late in the day, especially if Joe doesn’t want to step aside, which is likely. Bad as it was, it will be interesting to see if it makes much difference to the opinion polls in the next few weeks. Joe will probably survive unless there’s a really big swing, but I’m sure yesterday’s performance have Western leaders around the world feeling very worried.