Always Respect “No Solicitors” Signs
This is common sense. Don’t be a d***. If you don’t want anyone knocking on your door, I highly recommend getting a sign! If they knock anyway, you have the right to treat them however you want in my opinion.
Even when there is no signage posted, don’t be surprised if people are short with you or refuse to even answer the door (which is what I do when people come to my house). Folks are busy, and you’re requesting their time without providing a heads-up. It would be unrealistic and narcissistic to expect their undivided attention just because you dared to knock on their door. You aren’t that important.

Trump vs Harris Signs…
I didn’t let political party affiliation prevent me from talking to anyone. In fact, homes with political signage in the yard were often the most pleasant people to talk to. People are much more inflammatory online than in person, and I would have been happy to grab a beer with multiple individuals on both sides of the political fence.
If you’re knocking on doors to provide value to your community (whether presently or in the future), but you refuse to speak with certain people simply because they support a different political candidate, then you are not well suited to provide for your community in the first place. Why should anyone give you time and attention (or power) when you treat others like that? Don’t knock on doors unless you’re willing to talk to everyone, regardless of religion, race, or political affiliation.