Lots of these seem reprehensible, but totally within a reasonable space of legitimate free speech. Barring the cases with calls for imminent harm (e.g. turbulent priests and such), it seems that there's a big risk in trying to draw a legal line here.
In your polling station example, for instance, that has some clear negative impact. If I instead said "The library will be closed for the next month", is that protected though? What if I say "Arby's will be giving out free sandwiches from noon to two o'clock tomorrow"? All of these statements have negative impact.
The rationale for more extensive free speech is that it is expected that individuals have the right to hear what others are saying, and evaluating how bogus those are.
To be clear, some censorship is absolutely accepted in society today (e.g. libel laws, imminent threats, marketplace standards, etc), but the fear of an ill-defined line that can be shifted to suit political winds seems like a very reasonable one.
A few of them are plain-old voter suppression, and ~50% of the time, people in power find them incredibly convenient.
You don't see them very often, because in most free countries, trying any of them is an incredibly serious offence.
The overarching point still stands. That people being in favor of censoring "disinformation" (ie speech by private individuals) in certain instances but not others is an inconsistent stance that carries a distinct appearance of partisanship.
As for the rest, you're free to make whatever lies you want about others. Free speech doesn't allow you to initiate force against others so I'm not particularly concerned with any of it. We have gun rights to deal with people that try to enter your house or attack you over your skin colour and space laser accusations.
"Hello, this is just a reminder that your voting station will be open between 5 pm and 9 pm in (somewhere where it's not actually located), please remember to vote!"
"Hello, if you would like a free ride to your voting station, please text us 'YES', and wait at (location) between X and Y pm (Nobody will show up)."
"Hello, we have a great offer for auto insurance, blah, blah, blah."
"Hello, just a reminder, millions of trustworthy people believe that <opposition candidate> was responsible for <something untrue and horrible>. This isn't slander, because we are just strongly implying it in this robocall. Also, they live at XY address, and won't someone rid is of this meddlesome priest?"
"Hello, all the doctors are lying to you, buy our snake oil wellness supplements, instead. They are supplements, not drugs, we don't answer to the FDA."
"Hello, let's go down to sixth and Broadway next Tuesday, and make some noise/put the fear of God into <group>"
"<Ethnic minority group> is burning this country's forests down using space lasers."
"Hello, please be aware that it's illegal to discuss your salary with your coworkers."