He should withdraw from the ticket and allow the convention to pick a nominee who can contest the election more vigorously. Stop telling us that there is no alternative to letting a vain, tired man put himself before his party and his country.
I think that could only happen if there is a significant recession that finally occurs, as riverwalk has always predicted.
But even then, Harris the obvious replacement and likely wouldn't be doing much better, especially if that hypothetical recession is happening.