While I think it was a little bogged down with some of the back and forth and constant Trump interrupting to try throw Biden off his game (didn't really work, he's not Hilary), I have to say Biden came out ahead.
He talked about his points, got in some jabs he knew Trump would take and whine about, stammered a little on some things but overall, the winner of the debate.
Maybe Trump should be the one to take a drug test or get tested for dementia. Couldn't even answer the questions posed by Wallace, constantly rambling nonsense (Forest cities in Europe. Apparently they're Ewoks now), and of course the interruptions like a whining child.
I agree with others. The moderator needs to be able to cut the mic of the offender who interrupts.