In November, Washington could elect an out lieutenant governor, Kansas its first trans state legislator, and Michigan its first out member of Congress.
The mayor clapped back at Donald Trump for his call for her to "take back" her city from protesters.
An unidentified victim was peppered with antigay insults and then beaten by four men in southeast Washington State.
Police say David Bogdanov murdered 17-year-old Nikki Kuhnhausen after learning she was transgender. The victim was reported missing last June and found dead in December.
Police believe Nikki Kuhnhausen met a man on Snapchat and was later killed when he discovered she was trans.
Officials in King County, Wash., are investigating the incident as a possible anti-LGBTQ hate crime.
The ruling in Washington State comes one day after a similar one in New York.