Again, how is it you think you know this to be fact? Because it was reported as a result of the Harris campaign saying so?
If I had asked you on Thursday night about 6 or 7, you'd likely have told us that Beyonce was going to make a surprise appearance as the DNC's "special guest" as well. Why? Because the Harris campaign was leaking it to reporters all day (to get higher ratings allegedly, maybe Bey just got pissed for some reason and told them to pound sand, I have no idea). When confronted about the lack of a "special guest" as had been promised, they claimed it was Kackula all along.
So now we are supposed to believe their campaign that they turned him down? Make no mistake, I'm not saying that RFK didn't reach out to her people, but that doesn't mean they got first crack and turned him down. Her people wouldn't even meet his people and for all we know, his demands could have been way too high for them. Like maybe asking for an apology for the bullshit they pulled with him. We simply don't know the conditions under which he proposed a meeting. That doesn't mean she turned him down, it means she wouldn't meet his demands and we'll never know the truth either way because her campaign is one big lie. Lastly, unless you are referring to Haley voters who were D's in open primaries, don't kid yourself. They aren't supporting Kackula.
Now, I've got to go finish my wonderful supper that my wonderful wife prepared. We're having a main course of joy and hope for dessert.