Honest opinion.
I have said for two or more years that Biden would be the nominee for the Democrats when other people were sucking off Bernie, Harris, Beto, and Warren. I was correct on that, although if "he" gets in, we all know it's going to actually be Kamala (that no one voted for) that's going to take over when Biden becomes "sick".
With that said, I'm not confident either way. I do think there will be a large voter turnout, and there will be many people that are going to vote for Biden because they are told they need to do so, even if their lives have not been harmed by a Trump presidency. It's emotional voting with a lot of the left, and there are many lefties in this country.
I think you will see a massive surge of Trump voters tomorrow. Many have benefitted during these past four years and don't want to risk a Biden (Harris really) presidency. It's going to come down to Florida, Pennsylvania, Ohio, Michigan, Minnesota , Wisconsin, Arizona, and possibly Georgia.
I'll leave it at that as I don't want to have a political discussion in this thread. I understand why people don't like Trump, but I'm not going to get into that. It will be close, and I don't have a predication right now.