The conservatives always seem louder than the liberals around here too, but I don't know what conclusions to really draw from that. I live in South Carolina, so I see cars with 10+ Trump bumper stickers and the tacky Trump window hangers people put in their back seat windows all of the time. There's a guy in my neighborhood with a tacky spray painted "Lyin' Biden" sign in his yard, complete with total disregard to how much Trump blatantly lies. Someone else is flying a giant Trump flag.
I never saw anything like that for any Democratic presidential candidate around here. Not even Obama, who really fired up a lot of voters. Maybe it's just the area, or maybe most people who vote liberal don't express themselves that way.
I don't think the presidential debate really changed anyone's minds on whether they like Trump or Biden more. Everyone I know of who plans to vote for Trump is doing it despite his obvious, loud, and blatant character flaws. Everyone in the local church is going to vote for him despite him being convicted of illegally paying hush money to a prostitute. That doesn't matter. What matters is that he's against abortion, for example. That's it. To them, literally nothing else matters. Trump is against abortion so he gets their vote. Presidential debates don't have any impact on people like that.
Anyway, my expectation is that Trump will win the election, but probably still lose the popular vote. I'm expecting that Biden's poor debate performance had relatively little impact, but it may have convinced some people who might have otherwise voted for him to stay home. Or just the general impression that he's senile will, which the debate didn't help.
What remains to be seen to me is if anyone stays home who'd have voted for Trump since he claims that the elections are rigged and votes don't matter, but I doubt it.