It's probably a mix of people that are just scared shitless and others that secretly want Trump to win. Nothing indicates Trump is on course to win reelection. 2020 is not 2016 and there is no Clinton. Trump has already proven to be a horrible president. If Dems get out to vote like they did in 2018, he's toast.
Seriously. God damn people.
Trump beat Hillary, the absolute most hated Democratic candidate, by only 80,000 votes and that was because he had no actual political background to be scrutinized, the final minute FBI report against Clinton, and so many people just throwing up their hands and deciding that this was the perfect time to "protest vote".
Just realize the rest of the world was watching on, wondering how there was even a race between the internationally very well regarded Clinton and fucking Trump. Every other Democrat candidate is just a random nobody to us.