The Dornsife poll is partnered with the LA Times, at least it was last election.
I recall they had it close with swings of 4-6 points on a frequent basis and when the Clinton lead shrunk by 5 points during the week before election the Dems had a collective fit and totally trashed the LA Times and Dornsife.
Based on my memory, the last time i saw that poll posted on FR it had President Trump down to Biden by a lot. But it also had the GOP increasing its advantage in the Senate- which i found weird.