From “How RFK Jr. independent presidential run would shake up 2024 race,” a N.Y, Post piece by Diana Glebova:

Kennedy “would probably pull a little bit from both parties,” agreed Republican strategist John Thomas, who predicted a Kennedy candidacy would draw more support from Biden’s support, given the enthusiasm of the 45th president’s “rock solid” base.

“I would imagine RFK Jr. is more of a problem for Biden as an independent than he was as a Democrat,” Thomas said, “because Biden was able to kind of crush him by ignoring him.”