https://www.vice.com/en_us/article/qjpdgd/threatening-voter-emails-included-highly-suspicious-hacking-video

On Tuesday, an unknown number of Demoratic voters in Florida, Arizona, and Alaska received a threatening email urging them to vote for "Vote for Trump or else!" 

"We are in possession of all your information," the email read. "You are currently registered as a Democrat, and we know this because we have gained access into the entire voting infrastructure. You will vote for Trump on Election Day or we will come after you. Change your party affiliation to Republican to let us know you received our message and will comply. We will know which candidate you voted for. I would take this seriously if I were you. Good luck."