Announcing into a microphone at a high-profile event your intention to vote for someone is *literally* endorsing them formally, Nimarata.
"Nikki Haley says she'll vote for Trump.
The former South Carolina governor's remarks were her first on the matter since she dropped out of the presidential race. But she stopped short of formally endorsing her former rival." - npr.org
Nimarata, because she is against trans kids using names of their own choosing, so she gets called the name her parents gave her.
Edit: Incidentally, I am iffy on this stance. If you'd care to attempt to change my mind about it, in the spirit of personal growth, I'd be open to hearing your opinion.
I make a point of using transphobe’s given names if they prefer to go by something else, too.
The Golden Rule
If they break the contract of respect, they don't deserve its protection