Democrats LOVE Nikki Haley.She can not only run again in 2028, she is the odds on favorite to win if she runs. She's the only candidate who hasn't damaged her future chances. Right now, she's seen as standing up to the big bully in her party. Which her opponent can't stand.
MAGA will be gone by 2028 as will Trump and most of those who supported him.
You should endorse her to run for YOUR parties nomination.