A queer voter who received the threatening email shared it with the state's largest LGBTQ+ rights group, which is calling for a federal investigation.
Melina Rayna Svanhild Farley-Barratt, a lobbyist for women's rights, was running for Florida Senate.
On Tamron Hall's show, the former Florida gubernatorial candidate also spoke openly about the scandal that broke in Miami Beach in March.
The unverified image was released by Jacob Engels, who has connections to the Proud Boys.
The 40-year-old politician says he became depressed after running for Florida governor and turned to drinking.
Gillum, an LGBTQ ally and former nominee for Florida governor, was found vomiting in the bathroom of a hotel room where another man was in cardiac arrest.
The U.K. Parliament stepped in last year and took steps to legalize same-sex unions and abortion.