Joe Biden displayed an image of frailty in the first presidential debate.
Biden hesitated and seemed to lose track of his thoughts on several occasions.
Biden and Trump are basing their campaigns more on rallying against each other than on proposals.
Biden's debate performance has fueled doubts about his physical and mental capacity.
The debate became more about capacity than about arguments.
The Democrats are facing a confidence crisis and are under pressure to find a solution.
Conclusion: Biden's debate performance has raised doubts about his capacity to continue in office, leading to a confidence crisis within the Democratic Party.