The President is not in fact on the ballot this year, and quite a few will say "I don't like the President, but I like the local Republican candidate more than the local Democratic candidate". Except that the President should be on the ballot: the only serious question facing Congress is whether they will support his policies or take measures to oppose them. That's going to happen exclusively along party lines. Nothing else that either candidate promises actually matters.
It's all made worse by efforts to put a thumb on the scale. That, above all else, makes this feel like the last chance we'll have to fix this. I'm going to hold out hope that we'll take it.
Politicians have long understood that it's easier to get elected by being fearful of their opponents than with your own merits. We've just taken the next logical step: actively attacking them, in words and with restrictive actions. It hasn't yet proceeded to violence, for the most part, but that's only because people still haven't gotten bored with this level of harassment.