So is there anything that might be successful in ousting Trump from his top position in the Presidential race? Just saw Biden was +2 over Trump, but it's only one poll.

Sure! There's lots of things that voters don't or won't like about Trump. He killed Roe v. Wade! He tried to kill Obamacare! He was found by a court to have raped a lady! He wants to make things more expensive by imposing tariffs! Etc.

One of the tactical debacles of the debate was that Biden failed to effectively make any of those points. Democratic nerves about his capabilities aren't just limited to whether voters will think he's got the ability to do the job of President, but whether he's got the abilities to do the job of Presidential candidate. Part of his job (with the rest of the campaign) is to raise the salience on issues that voters agree with him on (like abortion), and lower the salience of issues they dislike about him (like immigration).

But a lot of this might just be locked in, at this point. Voters don't like Joe Biden, and they haven't for a while. They don't like Donald Trump, either. But both men are so well-known and well-defined to the voters that there's probably not a lot that can meaningfully change things.