Murphy campaign spokeswoman Alex Altman described the change as a "transition" and told The New York Times the campaign is still confident of a win in the June Democratic primary over Rep. Andy Kim.
With speculation intensifying that President Joe Biden will not seek a second term, Gov. Phil Murphy is raising his profile for a potential White House bid.
The appearances coincide with next week’s publication of Christie’s new book, "Republican Rescue: Saving the Party from Truth Deniers, Conspiracy Theorists, and the Dangerous Policies of Joe Biden."