Imagine how bad Democrats would be right now if Biden actually ran and won in 2016. By 1993, the Republicans were wiped out downballot.
Not exactly the same, since the House has been democratic for 40 years by 1992. Electors just hadn't been brainwashed by Fox News yet and trusted Democratic legislators reflexively over Republicans.
As for the Senate, a Biden win in 2016 would almost certainly have carried McGinty in Pennsylvania, and arguably Kander in Missouri.
So a 50-50 Senate, before a bloodbath in 2018 (perhaps 56-44) then probably the same result in 2020, maybe Perdue holds on: 54-46 GOP.