He’s clearly going through some form of age related mental decline. He should really drop out, for the good of the country, just like Biden did when the republicans were so sincerely worried about his mental decline and called for him to drop out.
He needs to lose though. 1, it'll be funny to see but more importantly 2, if he drops out they have a chance to put someone just as repugnant but way more savy and intelligent into the race.