Back in 2000, there were reports that McCain was brought up on Congressional ethics charges for having raped the wife of a former POW at some party. Apparently nothing came of the charges because McCain claimed that the woman was drunk and came on to him. The woman claims that she doesn’t drink or do drugs, so she could not have been drunk, a he said, she said, about an accusation where no charges were brought within the statutes of limitation. All references to this attack have disappeared from the internet, but as I recall, Maureen Dowd wrote a story about in during the 2000 election season. This will surface again, later in the election cycle, if it is indeed a matter of congressional record.
If you don’t have a reference for something like that, you should never, never, repeat such a thing. Be assured, if there were anything like that, we would have heard about it BEFORE McCain won the nomination. One of his rivals would have dropped it to ruin him.