One of the things I've found as someone who has moves between countries and continents is how different your exposure to news and issues is. I am not a fan of out of country voters and in this case I doubt they will make a difference, and there are plenty of them, retirees, who will just follow what Fox News tells them because they are the international propaganda arm that appeals to expats that are within a retirement bubble where they are not even directly affected by their vote.

But everyone in the US should be campaigning in the streets, putting out bulletins of how corrupt Trump is and how it was an issue before he even ran for president, and how corrupt he has continued to be and influenced by internal interests intent on weakening the US. If there are no ready to print bulletins, make them and post them for others to print and distribute. Specially in the Southern states, show how much of one of those big fancy snake oil salesman from the North he really is and just how much he has been fooling everyone. Tell them not to rely on those who are bought into the Trump diatribes so that lobbyists can get politicians on the tab, because they are really only interested in making products out of them for the next for years. Remind them of how 2020 ended up and what followed, how Trump's dissing and dismissal of the WHO had consequences, and how it was only after he was removed that actions were taken to avoid getting the US stuck in the same rut China still is. Tell them how just as he dismissed WHO, he will cause a disaster with NATO, an organization commanded and empowering the US, and how a Trump win will lead to a complete loss of US power to foreign invaders already setting their sights on US soil in Alaska.

Recognize their political inclinations and points out how even well-respected representatives like Mitt Romney have been driven out of their party by charlatans, and if they are ok with it, that they should see themselves in the mirror and how they've changed since 2012. I know this is tough, but the long lost art of critical thought involves seeing and appealing to things from their perspective even when you might disagree with them yet are far better than an orange authoritarian clown. Don't campaign for Biden if you are that really disillusioned with him, campaign against Trump and for the Trump alternatives that would have appealed to the voters and would have been candidates but no longer are capable of being because of how much his snake oil has rotted the party.

And I guess people from outside the US as well, since their bubbles will certainly by trying to get them to. Unless you want to vote for Trump, then your vote has already been preregistered so those nasty Dems don't fake them, don't worry about it :)