 incumbent presidents running for a second term have bad first debates. Ronald Reagan very famously had a bad first debate against Walter Mondale in 1984 when he was running for re-election, and Obama had a bad first debate against Mitt Romney when he was running for re-election. And so this has happened before. But the difference with Biden is that this subtext of is he up to the job, is he too old, is he too frail and cognitive problems and so on,