Local elections.
No one is getting a 3rd party candidate in the Presidential office today. Full stop, totally ridiculous idea, an absolute waste of a vote. Yes, a waste. It's a vote that will do nothing but help Trump win.
Meaningful reforms don't happen overnight, don't happen with magical ghost candidates that don't exist, or by "showing the Democrats you aren't happy by voting against them".
Meaningful reforms take time. Look at marijuana legislation. Incredibly popular support for, at a bare minimum, medical uses. We are talking nearly 50 years of fighting at a federal level, but local compassionate use has been around since the 1970s, despite efforts at the federal level to constantly make all marijuana use criminal. By the 90s there were several states with compassionate use ballot initiatives (though it took until 2000 for a state to legalize it through the legislature - Hawaii).
Despite democrats that were out there against use of cannabis for medical purposes, and the many, many, many Republican administrations who put up as many barriers as possible, we are now trending toward full legalization.
Should everyone have just given up because only some supported legalization, even medical-only? And let it be banned outright?
It's the same with climate change legislation, it doesn't have to be all at the federal level. And abortion access, protections for minorities, police reform, and so on, and so on.
So let's be clear about one thing. The choices this election are Trump and Biden. You're not getting any others.
You can vote for Biden with a chance for the future, or Trump where the platform explicitly goes against these concerns to the extreme, and outright going full throttle for fascism.
You want to signal to the Democrats? The only signal you'll be sending anyone is that fascism is A-OK, because you're not getting another chance at democracy.
So you send that signal locally. The other option is, for lack of any better way for me to phrase this right now, the absolute stupidest fucking idea I've ever heard.