Haley would be smart to try and be Trump's VP, since she could be the "moderate, who realized that MAGA was the only true answer" type candidate and would bring in some weirdos, unlike most VP picks that don't do anything.

Being Biden's VP pick would be sketchy for her, since just as an individual, she is way too opposed to abortion to ever be a "normal" Dem in 2028. The only way for that to happen would be if Republicans cooled off on opposing abortion, making liberals less pro-abortion as a response.