I am closer convinced that the only reason folks, particularly independents, would vote for either Kennedy or Haley is they just haven't done their homework. Kennedy looks like a president "should" and Haley sounds like a "regular" conservative - until you actually listen to her words and understand her own platforms.
Biden is a decent man who represents almost the perfect person for the job, although I do wish he were 10 or 20 years younger. I disagree with several of his policies, but that's what it means to vote for someone - when it comes to "least/worst" - it shouldn't even be up for debate. Kennedy is an entitled narcissist, Haley's policies are almost exactly what we had under trump's term, and of course the other one is just trying to stay out of jail. (His motto is "ask not what you can do for your country, but what you and your country can do for me")