When they die.
The rational thing right now would be to see if there is a Democrat out there less vulnerable to scandal than the Clintons. Elizabeth Warren pops up but she has problems of her own. It likely has to be a progressive female.
The Clintons are going to be with us for a long, long time. God will not have them and Satan does not want them. Each day Satan prays to God not to send them to him that day. So we are stuck with them for a long time. I would say both will be well into triple digits when they leave this Earth.