Not a poll, just my opinion.
Yesterday's assassination attempt was a horrible tragedy; though Trump survived, at least one innocent man is dead. A husband and father. And it sounds like a couple more may be critically injured.
But tragedies sometimes bring change and shape future events. I suspect the political landscape changed dramatically yesterday, and not in favor of the Democrats. I suspect it was an awakening of sorts that demonstrated what the hate that has come from politics has done to us. At least I pray it was. IMO, all these years of hateful lies and rhetoric from the Democrats just backfired on them.
And let's be honest...that picture of Trump with blood on his face and his fist in the air is powerful! I'm sure it wasn't planned, just happened, but it's plastered all over social media right now. It's become the symbol for change.
It will take some time for the American people to process all this, emotions are running high now. Polls typically take a couple of weeks to reflect any real shifts. My guess is that we'll see a lot of things change. Reports are that the Biden campaign has suspended their ads. I have the feeling some of the more decent Democrats will be coming forward to denounce and possibly even leave their party. I wouldn't want to be a Democrat right now.