The website Bizpacreview.com quotes Newsmax host Greg Kelly claiming that a Nikki Haley quote from April 2021 disqualifies her as a candidate for the 2024 GOP presidential nomination. The article has a link to the video and here's her quote:
I would not run if President Trump ran.
Her change of heart can be explained by Trump's behavior since the comment was made. I can imagine her responding "Yes, that is how it looked two years ago, but both Trump and our circumstances have changed. I believe a president needs to deal with current realities."