The Clintons had those 85+ FBI files and used them to avoid Senate impeachment. Probably lots and lots of juicy info on our honorable Senators. Glenn got rewarded with another space ride. Really principled guy, NOT!
It would be a mistake to assume that Republican Senators would have convicted but stopped short due to threats.
Instead the culture of Washington privilege is ingrained in them as in their Democrat counterparts. They told the House Managers that they wouldn’t view the special evidence files set up for them and they wouldn’t convict. Guys like Stevens were adamant that this was their consensus.