What he says on the tape (in conjunction with perfectly credible statements from multiple witnesses) tells you everything you need to know. And BTW, the standard shouldn't be whether he's been criminally convicted or not; but "preponderance of evidence".
As in the, you know, rational, pragmatic "Would you even consider (for so much as half a second) hiring someone who made statements like that, in conjunction with statements his victims? Let alone electing him to the office of dog catcher?" sense.