No candidate has entered a presidential debate so cloaked in disgrace or deeper in a hole than Donald Trump - and no candidate has ever been less prepared to face the most searing trial of his public life than the shaken Republican nominee. The walls were already closing around Trump before the Friday release of a video showing him blithely describing, in lurid and demeaning language, his efforts to seduce a married woman and how he would kiss and grope women even if they didn't want him to.