Even without the accusation he's loaded down with baggage. Considering he took the biden-in-his-basement path the winning the primary it should have been obvious he'd be severely tested in the general and it looks like his family is not surprised. Without this he may have squeaked in but with this there may be thousands that won't necessarily change their vote but may just abstain from the Senate race this time around. Warnock is a bit of "hey, vote for me" but probably more "hey, you really don't wanna vote for that guy do you?"
But we should look and see which part of the process is broken down. This should have been almost a cake-walk for just about any other candidate but it wasn't because someone is mad.