I don't know "This Election is the most important one ever!" holds true. It would if the dems get total control of the government. But I think even if the dems win, they're not getting total control of the Government. They'll get one branch. Two at the most if Trump fails to ram his SCOTUS nomination in. The other two will probably stay mostly the same.
Most importantly, I think Trump has changed enough that it'll set back the dem's plans for most of their next term. If he wins a second term, he'll set the dems back by decades. But Even if Biden wins, Trump's supporters aren't going away. They're just gonna get more vocal about Biden/Harris. Even if they win this election, the next one WILL go to a Republican. Because they're gonna fuck shit up enough were even the normies are gonna hate em. And if Harris does take over for Biden, its gonna be a landslide in 2024. She's not likable enough and has too much baggage. Anything she does will be boo'd by Trump's base.
I guess the above is dependent on the GOP not shitting the bed and going back to their old ways. That's up in the air. Even if the GOP shits the bed, I can see Trump's base going off and forming their own party.
E: I guess I'm more focused on Domestic issues. The dems will probably take us back to Obama era international politics. Which means no more America First. It would mean American in X place while the rest of the world walks all over us. Not to mention they might start a war with someone (Russia maybe). More jobs going overseas.
I'm just undervaluing what they'll do since too many people think we'll get LWDS as soon as the election is called. Or at least act that way.
Make sure you get out there and fucking vote on Nov. 3.